Wheels

- Nutted aluminum BMX hubs with cutout flanges for aesthetics and weight savings - Sealed bearing for improved performance and longevity - Use: Rear - Gears: Flip/flop singlespeed freewheel - Drilling: 36H - Axle: 3/8-inch - Material: Alloy - Brake Type: Rim - OLD: 110mm

- Singlespeed freecoaster hubs with 9-tooth driver - Sealed bearings - Use: Rear - Gears: Singlespeed w/ 9-tooth driver - Drilling: 36 - Axle: 14mm - OLD: 110mm - Bearing Type: Sealed

Shimano Alfine Center Lock Dynamo Front Hub - Compatible with 26 to 28-inch wheel sizes - Light alloy QR lever and nut - 6V, 3.0W output - Centerlock rotor mount - Spoke Interface: J-Bend - Weight: 575g

- Designed for all-around Trail/Enduro use - Ideal for 2.3-2.6" tires and bikes from 110mm to 180mm travel. - Depth –20mm - Inner Rim Width –30mm - Asymmetric External Molded Spoke Holes - 3mm Offset for more balanced spoke tension - Wide Hookless Bead Anti Pinch-Flat Technology - No inserts required or recommended - Rim Construction: Double wall - Brake Type: Disc - Tire Type: Tubeless Ready

The Trace rear axle fits Race Face wheels equipped with Trace hubs, like the Aeffect Wheelset. Use it as a replacement axle or to convert your wheel to a different axle standard. - Light and strong alloy construction - Compatible with Race Face Trace hub

CZR i30 wheels were designed to handle it all, which is why they feature a strategically reinforced carbon layup and are hand built using double-butted spokes, brass nipples and high-engagement hubs featuring top-tier bearings and oversized freehub seals to establish themselves as wheels that simply won't quit. Solid Strip & TCS Tape - Durable nylon strip that lies between the rim and tubeless tape to prevent tubeless tape from pushing into the spoke holes and ensures a smooth interface between the tire and rim. The smooth surface makes it easier to mount a tire by preventing air from escaping around the bead at each indent during inflation. Solid Strip also protects the airtight system from puncture in the case of a broken spoke. 3-Cross Lacing & Brass Nipples - Too many companies are trying to save weight by offering "enduro" wheels with 2-cross lacing patterns and inadequate alloy nipples. While those are suitable for XC and light trail usage, there's no replacement for the long-term reliability of a 3-cross lacing pattern with brass nipples holding it all together. Frequency Hub - The world's best carbon rims deserved to be paired with high-quality hubs that further improve the performance of a lightweight, dependable carbon wheelset. Frequency hubs feature a low-drag, 6-pawl design that alternates contact between two sets of 3-pawl groupings to provide a responsive 5 degrees of freehub engagement. Heavy-Duty Pawl Springs - CZR i30 wheels feature heavy-duty pawl springs that engage with greater force to counteract the additional torque caused by sudden cranking on steep trails. We also offer a Light Pawl-Spring Kit that can be purchased separately for CZR i30 riders who prefer a quieter hub with lighter pawl engagement. Usage: Trail, Enduro

The EC70 AX wheels connect EC70 carbon rims to our proven X5CL hub with 28 3x double butted Sapim straight pull spokes. End cap and axle components are available for all major industry standards. Wide, 24mm internal rims are optimized for gravel tires 35mm and larger, giving you a more confident tire stance for control on the ground during your expansive adventure rides, single track forays and unrelenting gravel races. Our Easton Overland team and SDG Muscle Monster team riders have put these wheels to the test, racing prototypes at DK200, with Amity Rockwell taking the DK Queen title and Amanda Nauman finishing 6th, while at Lost and Found 2019 Michael Van Den Ham came in 4th and Craig Richey took 6th.

- End cap adapters for Origin8 RD1120 series 11-speed road hubs

- Aluminum hubs - Loose ball - Bolt-on - Axle: B/O 3/8 - Material: Aly - Color: Blk - Brake Type: 6B - OLD: 170mm

A few too many drops to flat? Get your Arrow Rear Hub back in solid working order with this replacement axle/cone set from WeThePeople.

Did you trash the bearings on your WTP Supreme rear hub? It's okay, that just means you're going big enough to make it count. Fear not, we've got you covered with this bearing set from WeThePeople.

Industry Nine Hydra Classic hubs are the heart of your wheelset, everything revolves around them, literally. Every Classic Hydra hub is made from start to finish in Asheville, NC. From turning and milling bar stock 7075-T6 aluminum for shells, axles, and endcaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing, and assembly is done to exacting standards. - 690 P.O.E. Hydra Freehub body engages every 0.52 degrees, yielding telepathic control - 6 pawl, 6 phase - 115 tooth drivering - Easily serviced with no proprietary tools—designed to keep you in the saddle and out of the service queue

Road bikes are going where they’ve never gone before, are expected to do more, and are being ridden harder than ever. At the same time disc brakes are rewriting the rules of what’s possible with rim design. For this new era, the Zipp 303 Firecrest Tubeless Disc-brake wheelset sets the new standard. With a disc-specific, tubeless rim, the 303 Firecrest Carbon Clincher is now internally 21mm wide and faster than ever. Designed from the start as a tubeless rim, the 303 Firecrest features a rim bed made with internal ridges to lock the tire’s bead in place, ensuring secure performance, even when ridden at lower tire pressures. A new carbon fiber layup keeps weight low while maintaining the 303’s legendary durability. The rim’s lightweight design allows the 303 to glide up the steepest climbs while SRAM's robust 77/177D hubset keep the wheels stiff and responsive. Each Wheel Includes: - Zipp Tubeless valve extender and valve-core wrench - Zipp rim tape (factory taped) - Zipp Tangente quick-release skewer - Zipp thru-axle end caps

Zipp 101 XPLR MOTO Rim Strip And Tubeless Tape Kit (includes rim strip and tubeless tape for 1 wheel).

Zipp's 101 XPLR is our first purpose-built rim for gravel. Thanks to MOTO Technology, this wheelset arms gravel cyclists with more control and durability over harsh terrain, providing a smooth ride quality that helps reduce fatigue. That means a more comfortable ride. The 101 XPLR -short for explore-is purpose-built for riders searching for adventure beyond the norm. Think of it as a magic carpet ride over primitive roads, especially with large tubeless tires at lower tire pressures. This rim is ideal for gravel racing, adventure, or any long day in the saddle. Based on Zipp's MOTO Technology, the 101 XPRL's single-wall rim construction provides excellent compliance and vibration damping. Less fatigue, allows you to ride longer and faster. Quarq's TireWiz is an add-on option for 101 XPRL to dial in your pressure for an even more compliant ride. - All day comfort and compliant ride - Available in 700c or 650b - 27mm wide internal profile - Reduced chance of pinch flatting - More traction in rough corners - Smoother ride in rocky terrain - Ability to run lower tire pressure - Less fatigue, which allows you to ride longer and faster - Frustration-free tire installation - Lifetime Warranty

- Straight gauge 2.0mm with cold forging technology - Chrome nickel stainless steel with rolled threads - 222g @ 32h/265mm - Box of 100 - Nipples sold separately

The Spank 359 Rim is a radially compliant gravity rim featuring our Oohbah Inverted Inner Wall and BeadBite anti-burp technology. Optimized for DH, FR, and heavy enduro use. - Moderately low 19mm profile height and wide width balances the benefits of radial compliance with high lateral stiffness and predictable handling. - Radial Compliance improves traction over bumps and chatter while reducing negative feedback to the rider. Performance and comfort are improved. - 5mm inner width is extremely versatile, fitting tires from 2.0" to 2.6", and even allowing + size tire use without negative squaring off of tire profiles. - Bead Bite tubeless hooks enhance tubeless performance and tire security, even at lower pressures.

R45D hubs combine low-drag 45-tooth RingDrive™ system, a lightweight hub body, and legendary made-in-house bearings. The result is the increased power and modulation of disc brakes, the fast, smooth rolling speed of our bearings, and the superior responsiveness of our RingDrive engagement system when you put the power down. - Patented RingDrive system with 45 simultaneously engaged points of contact for virtually drag free engagement - Easily serviceable and completely re-buildable with our R45 Hub Service Tool - Hub Drilling: 32 - Skewer Included: No - Hub/Brake Compatibility: Center-Lock Disc - Cassette Body Type: Shimano/SRAM 11 Speed Road , Shimano/SRAM 8, 9, 10 Speed - Spoke Interface: J-Bend - Bearing Type: Sealed Cartridge

- Flanged 15mm axle nuts - Durable chromoly construction - Spacing / Axle: B/O

- Straight gauge 2.0mm with cold forging technology - Chrome nickel stainless steel with rolled threads. Black surface treatment resists scratches - 222g @ 32h/265mm - Box of 72 - Nipples sold separately

- Wheel bearing kit front/rear - Bearing dimensions: 17 x 30 x 7mm - Material: steel - 2 pieces

Elite Series skewers for fat bike applications AL6061 alloy lever with CrMo axle Available for 135mm, 150mm, 170mm, and 190mm OLD spacing

- End cap for Origin8 MT-3200 hubs - Spacing / Axle: 148mm

Front RockShox/SRAM-specific Torque-Cap 15mm through-axle SealLock end caps for Neo and Neo Ultimate hubs. SealLock end caps feature a low-friction U-cup seal that snaps into place and stays secure even when your wheel is removed from your bike. Torque-Cap end caps have the same 15mm inside diameter as other systems, but outside diameter is larger (31mm), making these end caps only compatible with Torque-Cap-compatible forks. Note: Torque caps are not compatible with centerlock hubs.

V2 Tubeless valves are stronger, lighter, and even easier to use thanks to the machined aircraft grade 7075 aluminum and Muc-Off's new Tire Insert air ?ow system. The new design features six slots that are machined into the base of the valve stem, allows tubeless sealant ?uid and air to ?ow freely, even when running tubeless tire inserts. - 7075 Machined Aluminum valve stem and cap - Tire Insert air flow system keep air moving freely and compatible with most tire foam inserts - 4mm machined Allen Key slot for easy installation and removal - Includes Valve Core Removal Tool (integrated into spare alloy cap) - Supplied with various rubber bases to optimize fit with multiple rim types

After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding.

- Aluminum hubs - Sealed bearing - Black - 6-bolt disc rotor

The Problem Solvers Axle Nut is perfect for wheels with solid axles (also called bolt-on axles). This quality nut is made of durable chrome-plated steel and features a built-in integrated rotating washer to hold tight.

Built for bashing, whether on a gravity shred sled or fully loaded bikepacking rig, WTB's KOM Tough rims are extruded from top-tier alloy to provide utmost durability at a reasonable weight. Their legendary I-Beam construction has evolved to further reinforce the rim with dual support beams that provide increased strength and stiffness for the world’s most aggressive riders. KOM Tough rims are proven on the toughest tracks of the Enduro World Series, depended on for daily trail rides, and trusted while bikepacking in remote regions of the world. Features: - TCS 2.0 creates a more robust, easily installed and dependable tubeless system. - A recessed channel along the center of TCS 2.0 rims allows installation of the all-new Solid Strip, which prevents tubeless tape from sagging at the spoke holes and results in a smooth, consistent interface between the tire and rim. - 4D angled spoke drilling eliminates binding and lateral loading, and disperses tension more evenly over a greater area.

The Box One Rims feature a double-walled, eyeleted, low-profile design optimized to be both lightweight and durable! We offer these in both brake and brake-less variants. You’ll have a clean and sleek wheel build with rim brake tracks as needed. FEATURES - Low Profile Design - Optimized Internal Geometry - Machined Brake Track IMPORTANT NOTES Brake-less variants do not have a brake track and therefore are not designed to be used with rim brakes! They are to be used as front or rear rims with disc brakes ONLY! COMPATIBILITY - Box One XS Mini Carbon 1" alloy steerer 20" x 10mm fork - Box One Harmonic Expert Hubset 28h - Box Three Expert Hubset 10mm 28h - Box One Stealth Expert 10mm Front Hub 28h - Box One Stealth Expert 10mm Rear Hub 28h

The Box One Rims feature a double-walled, eyeleted, low-profile design optimized to be both lightweight and durable! We offer these in both brake and brake-less variants. You’ll have a clean and sleek wheel build with rim brake tracks as needed. FEATURES - Low Profile Design - Optimized Internal Geometry - Machined Brake Track IMPORTANT NOTES Brake-less variants do not have a brake track and therefore are not designed to be used with rim brakes! They are to be used as front or rear rims with disc brakes ONLY! COMPATIBILITY - Box One XS Mini Carbon 1" alloy steerer 20" x 10mm fork - Box One Harmonic Expert Hubset 28h - Box Three Expert Hubset 10mm 28h - Box One Stealth Expert 10mm Front Hub 28h - Box One Stealth Expert 10mm Rear Hub 28h

Replacement freewheel spoke protector, in various sizes for different freehub sizes. - Made of clear plastic - Fits around standard freewheel threads

- Elite Series convertible MTB hubs - Available in multiple axle configurations - Shimano and XD cassette body options with 6 pawl/54 point/6.6-degree engagement - Straight pull and J-bend spoke options - 6 bolt disc brake rotor compatible - Sealed bearings - Material: AL6061 J-Bend/QR: - PCD-L: 58mm - PCD-R: 58mm - LTF-L: 32.95mm - LTF-R: 48.45mm - CTF-L: 34.7mm - CTF-R: 19.2mm J-Bend/142 x 12mm: - PCD-L: 58mm - PCD-R: 58mm - LTF-L: 36.45mm - LTF-R: 51.95mm - CTF-L: 34.7mm - CTF-R: 19.2mm Straight Pull/QR: - PCD-L: 51mm - PCD-R: 51mm - LTF-L: 36.2mm - LTF-R: 50.1mm - CTF-L: 31.45mm - CTF-R: 17.55mm Straight Pull/142 x 12mm: - PCD-L: 51mm - PCD-R: 51mm - LTF-L: 39.7mm - LTF-R: 53.6mm - CTF-L: 31.45mm - CTF-R: 17.55mm

- Elite Series road hubs - Shimano and Campagnolo cassette body options with 6 pawl/48 point/7.5° engagement - Straight pull and J-bend spoke options - Sealed bearings - Material: AL6061 - Brake Type: Rim - OLD: 130mm Straight Pull Spoke: PCD-L: 32mm PCD-R: 52.5mm LTF-L: 27.7mm LTF-R: 50.8mm CTF-L: 37.45mm CTF-R: 14.35mm J-Bend Spoke: PCD-L: 38.5mm PCD-R: 50.6mm LTF-L: 27.45mm LTF-R: 49.05mm CTF-L: 37.7mm CTF-R: 16.1mm

When mounting a wheel quickly and safely, the RWS system is untouchable. It combines the fast mounting of a conventional quick release with the force and safety of a fitting. The high-precision toothing at the inside of the lever allows you to fully tighten the axle and to perfectly position the lever. - Ratcheting system tightens skewers with turns rather than a cam - Lever can be rotated into an ideal position after tightening

When mounting a wheel quickly and safely, the RWS system is untouchable. It combines the fast mounting of a conventional quick release with the force and safety of a fitting. The high-precision toothing at the inside of the lever allows to fully tighten the axle and to perfectly position the lever. - Ratcheting system tightens skewers with turns rather than a cam - Lever can be rotated into an ideal position after tightening - Removable, plug-in lever design is streamlined and protects your RWS lever - Thread pitch: 12 x 1.5mm - Length: 121mm

Aluminum rear hub for bicycle - 18P DBCL 24 holes, straightpull, black. Aluminum Campagnolo freehub body, black. - Dimension: 12x142mm

Sleeved 30 mm Enduro rim, ready to eat rocks. Bringing wide profiles to the most demanding enduro riders, both price- and performance-wise. A sibling of our EWS-winning welded rims, the E 532 packs the materials and technology the worlds fastest racers use and puts it into an affordable rim for everyday chargers.

The mounting solution for thru-bolt front wheels. Designed for an axle diameter of 9mm in the front, the thru-bolt system is a special kind of axle mounting for bikes. The DT Swiss thru-bolt system is compatible with standard quick-release dropouts but requires hubs that are compatible with the Thru Bolt. The stronger wheel connection results in greater stiffness. - Overall Length: 115mm - Thread Pitch: M9 x 1.0mm - Flat Washer

This welded, 30mm-wide E-MTB rim is the ideal all-rounder. When you head into the unknown, the HX 531 is the perfect choice with a 30mm internal width to support meaty tires. With an ideal position in the middle of the strength to weight to width range, it works with many tire sizes and is the ideal choice for all eMTB's meant to be ridden on proper MTB terrain.

Direct power meets simplicity—running smoothly day-in and day-out. The 350 hub was developed according to the credo: Reliability meets simplicity. The simultaneous engagement of the ratchets and the resulting large engagement area provide reliability. The plugged construction allows easy maintenance without the need for tools. Adaptation to different axle standards or modification of the engagement angle is also possible with just a few manual steps.

When mounting a wheel quickly and safely, the RWS system is untouchable. It combines the fast mounting of a conventional quick release with the force and safety of a fitting. The high-precision toothing at the inside of the lever allows you to fully tighten the axle and perfectly position the lever. - Ratcheting system tightens skewers with turns rather than a cam - Lever can be rotated into an ideal position after tightening - For E-thru axle frames - Length: 171mm - Thread Pitch: 12 x 1.5mm

This rim can take heavy loads and cope with demanding surfaces at the same time! Are you searching for a pair of rims to ride off the beaten path? If so, the RR481 may be the perfect option for you. With an inner width of 22mm and approved up to a 130kg system weight, this extremely durable rim is made for rough, off-road rides. Whether you mount them on your Cyclocross bike, your gravel racer, or for your next bike-packing trip, the RR 481 won't let you down.

Versatility. A mountain bike is meant to go up and down mountains and to provide fun while doing so. The H1700 Spline do precisely that. And since e-bikes allow the rider to go up and down many mountains in one ride, reliability and weight is key. - 350 based Spline hub - E-bike specific straight pull spokes are built with a 3-cross pattern - Includes tubeless tape and tubeless valve

Strong and lightweight welded AM rim in 30mm inner with modern tires. Riders who like the idea of giving their tires some extra volume and support will find the ideal partner with the XM 481. Its full 30mm of inner width combined with a minimal hook and perfect tubeless compatibility make it ready to tackle all demanding trails, both up and down the mountain.

The FR 541 may not be your first rim, but it aspires to be the last. The new rim shape improves the impact resistance, enabling you to push a little harder on the trails. It also enhances the pinch flat protection for a trusty ride on rougher tracks. Build this rim with care and it will reward you with resistance and lightness for a long-lasting bond. - Aluminum welded construction, hooked tubeless design - PHR – Pro Head Reinforcement system increases the load-bearing surface of the nipples on the rim and reduces localized stresses - Provides a 17% increase in pinch flat resistance compared to the previous FR 560 rim - Disc brake only

The XMC 1200 Spline is the ultimate all mountain wheel. A carbon layup specifically tuned for all mountain use makes the rim tough yet super-light. The hubs feature the latest incarnation of DT's Ratchet System. Extremely refined machining and fully lasered graphics make them the lightest hubs DT Swiss has ever made. Together with bladed top-end spokes and perfect DT Swiss build quality, this wheel is made to ride trails with speed and confidence. - Requirement-specific carbon rims are designed for the ultimate all-mountain riding experience - The carbon rim combined with the DT Aerolite and DT Aero Comp spokes ensure perfect wheel stiffness - The low weight of the 1200 Spline reduces the moment of inertia and increases acceleration, leading to higher average speeds compared with aluminum wheels with the same energy input - 180 straightpull hub is a lighter, stiffer, and more durable hub - Alloy presta valve is lightweight - Wheels are tubeless ready, with a rim design that ensures a precise and safe fit of the tire even when ridden hard - Nipples have DT Pro Lock to prevent the spoke-nipple connection from loosening - 3 cross spoke pattern, DT AeroComp straight pull spokes, DT ProLock Squorx ProHead aluminum spoke nipples

Your entire focus lies on the right line choice, the exact braking point and the spot-on steering movement. All the everyday stress fades away, you feel free and only hear the precise sound of the freehub system. The E 1900 Spline wheels were developed precisely for these freewheeling moments. A proven aluminum rim and hand-laced steel spokes provide the reliability required from an Enduro wheel. - Intended use = All-Mountain/Trail, Enduro and Freeride - Tubeless ready, 30mm wide and light rim - Straight-pull hubs/spokes built with a 3-cross pattern - Includes Tubeless Valve and Tape, 6-bolt adapter with lockring

- Designed to stabilize 15g spokes in most hub flanges - 1000-pack

A 25mm welded rim made for the demands of AM. Lightweight rims as wide as most downhill rims were just a couple of years ago? State-of-the-art materials and extensive testing make it possible. DT Swiss knows exactly how light it can design a product to fulfill its purpose to perfection. This is why the XM 421 is as light as an All Mountain rim can get, yet still fears no trail, no matter what rock gardens it has on the menu.

You like gravel and wide tires? This is your rim. The GR 531 is made for off-road adventures. This aluminum gravel rim with an inner width of 24mm is designed for wide, knobby tires up to 53mm. Torsion-resistant and robust, the welded rim supports a wide range of gravel use.

Maximum stiffness and highest safety—the RWS Quick Release for road and MTB. Our patented RWS axle system is stiffer, safer, and easier to use than conventional quick-release axles. The RWS quick release is absolutely reliable and offers a strong connection to the frame. The perfect choice for anyone who is looking for maximum performance and safety.

The buyer's choice for wheel builders looking to save weight. The nipples are available with or without DT Pro Lock, a patented liquid inside the nipple thread that makes the connection between the nipple and spoke extremely durable. It pairs perfectly with any wheel, though all-brass nipples are recommended for e-bike use. - Weight: starting at 20g for 64 nipples

Our lightest alloy rim with welded, advanced rim profile! The most advanced alloy existing for rims meets the most advanced rim profile to form the RR 411 rim. From the moment the alloy is melted, all the way to the secret surface treatment, this rim is all about getting the absolute best out of the great, shiny metal that is aluminum. Very light, very strong, and very classy is the result.

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

This is one of the most versatile spokes in the DT Swiss spoke range. DT competition gets its special strength from cold forging. This makes an extremely durable spoke and thanks to the thinner middle section, it is 48 g lighter (per 64 spokes) than a spoke with a constant diameter of 1.8 mm. It is perfect for a wide range of uses, from road wheels to super light enduro MTB wheels. - Double Butted: 2.0/1.8/2.0 - One 264mm spoke = 6g - Nipples sold separately

DT Champion 2.0 spokes cover the whole spectrum from reliable road wheels to MTB gravity wheels. - Threadless spoke blanks - Nipples sold separately

Replacement axles for DT Swiss hubs.

Your entire focus lies on the right line choice, the exact braking point and the spot-on steering movement. All the everyday stress fades away, you feel free and only hear the precise sound of the freehub system. The E 1900 Spline wheels were developed precisely for these freewheeling moments. A proven aluminum rim and hand-laced steel spokes provide the reliability required from an Enduro wheel. - Intended use = All-Mountain/Trail, Enduro and Freeride - Tubeless ready, 30mm wide and light rim - Straight-pull hubs/spokes built with a 3-cross pattern - Includes Tubeless Valve and Tape

Introducing the Gravel racing GRC 1400. With a holistic approach of engineering DT re-thought the characteristics of a modern benchmark setting gravel wheel set. Aerodynamic efficiency, ideal support of wide gravel tires leading to comfort and traction off-road as well as remarkable durability are only some of the key features that make this wheel set the perfect companion for your next gravel adventure. - 42mm aero-optimized rim depth for 35mm wide gravel tires - 36T RatchetSystem technology