29-Inch

Zipp's 3ZERO MOTO carbon 29 enduro/trail wheelset is inspired by moto to provide riders with the control and durability required for pure trail speed. This wheel and its MOTO Technology have already been proven by multiple victories in the Enduro World Series with our pioneering partnership with the Lapierre Zipp Collective. While other wheel brands limit their focus to traditional box-section rim designs, Zipp engineers—uninhibited by legacy technology—took a different approach. They looked to motorsports as a model. Zipp's Moto Technology's single-wall rim is the optimal approach for an enduro/trail wheelset. The resulting rim provides something we call "ankle compliance." Imagine a runner rounding a sharp turn, the ankle naturally flexing to maintain grip as the runner leans. The 3ZERO rim can locally flex to stay parallel to the ground during cornering, increasing traction like a human ankle adjusts while running. This ability to twist locally allows it to deflect during single bead impacts without the rider getting bounced offline. 3ZERO MOTO helps you take the most direct route, saving seconds when and where they count most. At the center of the 3ZERO MOTO is the ZM2 hubset. This German-engineered hubset features 12 pawls and 132 points of engagement for a quicker response. The hub's improved seal design means better durability on rough terrain. Quarq's TireWiz is an add-on option for 3ZERO to dial in your pressure for an even more compliant ride. - Higher impact resistance - Reduced chance of pinch flatting - More traction in rough corners - Smoother ride in rocky terrain - Ability to run lower tire pressure - Reduced rider fatigue - Frustration-free tire installation - Rim is designed for compliance, creating the feel of extra suspension - German-engineered hubset features 12 pawls and 132 points of engagement for quicker response and also has improved durability - Lifetime Warranty

Rims: WTB CZR i30 Carbon 29" - ETRTO 622-30 - Inner width: 30mm - Made from Torayca T700 UD carbon fiber, striking a fine balance between stiffness and compliance - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Externally reinforced spoke bed - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip (included) - 32 holes Front hub: Sram 900 Boost - 15x110mm Thru-Axle (Axle not included) - 6 Bolt Disc Mount - Sealed cartridge bearings Rear hub: Sram 900 XDR Boost - 12x148mm Thru-Axle (Axle not included) - 6 Bolt Disc Mount - Sealed cartridge bearings - Sram Double Time 4-Pawl Ratchet Freehub, 52 Points of Contact, 6.9 degree engagement angle - Compatible with 11,12 speed XD (1.85mm spacer included) Sold in Pair, including: - Tubeless Valve (x2) Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), 14mm Brass Polyax Nipples (Black)

Rims: WTB DX18 700C / 29'' (ETRTO 622), inner width: 18 mm - Anodized black finish - CNC machined sidewalls - Stainless steel eyelets - Rim wear indicator - Pinned joint - Drilled for Schrader valve - 36 holes Front hub: Shimano HB-M475 (Black) - 9x100mm - 6-Bolt Disc Mount - Adjustable Cup & Cone - Contact sealed hub - Quick Release Binder included Rear hub: Shimano FH-M475 (Black) - 10x135mm - 6-Bolt Disc Mount - Adjustable Cup & Cone - Contact sealed hub and freehub body - Quick Release Binder included - Compatible with 8,9,10 speed (MTB 11 speed requires 1.85mm spacer, not included) Assembled in North America by experienced wheel builders using Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black)

Rims: WTB DX18 700C / 29'' (ETRTO 622), inner width: 18 mm - Anodized black finish - CNC machined sidewalls - Stainless steel eyelets - Rim wear indicator - Pinned joint - Drilled for Schrader valve - 36 holes Front hub: Shimano HB-M475 (Black) - 9x100mm - 6-Bolt Disc Mount - Adjustable Cup & Cone - Contact sealed hub - Quick Release Binder included - Rear hub: Shimano FH-M475 (Black) - 10x135mm - 6-Bolt Disc Mount - Adjustable Cup & Cone - Contact sealed hub and freehub body - Quick Release Binder included - Compatible with 8,9,10 speed (MTB 11 speed requires 1.85mm spacer, not included) - Assembled in North America by experienced wheelbuilders using Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Front hub: Sram 900 Boost - 15x110mm Thru-Axle (Axle not included) - 6 Bolt Disc Mount - Sealed cartridge bearings Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), 14mm Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Rear hub: Shimano FH-MT400-B (Boost, HG) - 12x148mm (Axle not included) - Center Lock (6-Bolt adapter included) - Quick Engagement Freehub, 36 Points of Contact, 10 deg. engagement - HG compatible Shimano 11spd and Sram NX / SX splined 12spd (10spd and below needs spacer) - MS compatible 12 Spd Shimano Micro Spline only Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), 14mm Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Rear hub: Shimano FH-MT410-B (Boost, MS) - Center Lock (6-Bolt adapter included) - Quick Engagement Freehub, 36 Points of Contact, 10 deg. engagement - HG compatible Shimano 11spd and Sram NX / SX splined 12spd (10spd and below needs spacer) - MS compatible 12 Spd Shimano Micro Spline only Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), 14mm Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Front hub: Shimano HB-MT400-B Boost - 15x110mm (Axle not included) - Center Lock (6-Bolt adapter included) - Angular contact bearings - Contact sealed hub Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), 14mm Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Rear hub: Shimano XT FH-M8010-B (Boost, HG) - Center Lock (6-Bolt adapter included) - Quick Engagement Freehub, 36 Points, 10 deg. engagement - HG compatible Shimano 11spd and Sram NX / SX splined 12spd (10spd and below needs spacer) - MS compatible 12 Spd Shimano Micro Spline only Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Rear hub: Shimano XT FH-M8110-B (Boost, MS) - Center Lock (6-Bolt adapter included) - Quick Engagement Freehub, 36 Points, 10 deg. engagement - HG compatible Shimano 11spd and Sram NX / SX splined 12spd (10spd and below needs spacer) - MS compatible 12 Spd Shimano Micro Spline only Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), Brass Polyax Nipples (Black)

Rims: WTB HTZ i30 29" - ETRTO 622-30 - Inner width: 30mm - 6061 series aluminum - Asymetric and angled spoke hole drilling distributes spoke tension more evenly - Reinforced I-Beam profile - Strong sleeved joint - Drilled for Presta valve - TCS 2.0 Tubeless System compatible - Solid Strip included - Tubeless valve included - 32 holes Rear hub: Shimano XT FH-M8130-B (SuperBoost, MS) - Center Lock (6-Bolt adapter included) - Quick Engagement Freehub, 36 Points, 10 deg. engagement - HG compatible Shimano 11spd and Sram NX / SX splined 12spd (10spd and below needs spacer) - MS compatible 12 Spd Shimano Micro Spline only Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), Brass Polyax Nipples (Black)

- Rims: WTB ST i23 (Black), inner width: 23 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Rear hub: Formula DC22 (Black), Laser etched logo, M10x135mm - HG Freehub compatible with 8—10, MTB 11-speed - 6-bolt disc mount - Adjustable bearings - Quick-Release binder included - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Valve and Tape not included)

- Rims: WTB ST i23 (Black), inner width: 23 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Front hub: Formula DC71(Black), Laser etched logo, 15mm TA, O.L.D. 100mm - HG Freehub compatible with 8—10, MTB 11-speed - 6-bolt disc mount - Sealed bearings - TA Axles not included - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Valve and Tape not included)

- Rims: WTB ST i23 (Black), inner width: 23 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Rear hub: Shimano FH-MT200-B (Black), Shimano logo, M9x141mm BOOST141 - HG Freehub compatible with 8—10, MTB 11-speed - Center Lock disc mount - Adjustable bearings - Quick Release binders included - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Valve and Tape not included)

- Rims: WTB ST i23 (Black), inner width: 23 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress- free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Front hub: Shimano HB-MT400 (Black), Shimano logo, 15mm E-THRU, O.L.D. 100mm - Center Lock disc mount - Adjustable bearings - Rear Quick Release binder included (FH-MT4050) - E-THRU Axles not included - Tubeless Compatible (Valve and Tape not included) - Assembled in North America by experienced wheelbuilders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black)

- Rims: WTB ST i23 (Black), inner width: 23 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Rear hub (1): Shimano FH-MT400 (Black), Shimano logo, 12mm E-THRU, O.L.D. 142mm - Rear hub (2): Shimano FH-MT4050 (Black), Shimano logo, M10x135mm - HG Freehub compatible with 8—10, MTB 11-speed - Center Lock disc mount - Adjustable bearings - Rear Quick Release binder included (FH-MT4050) - E-THRU Axles not included - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Valve and Tape not included)

- Rims: WTB ST i30 (Black), inner width: 30 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Rear hub (1): Formula DHT148 (Black), Laser etched logo, 12mm TA, O.L.D. 148mm BOOST - Rear hub (2): Formula DC2241 (Black), Laser etched logo, M9x141mm BOOST141 - HG Freehub compatible with 8—10, MTB 11-speed - 6-bolt Disc mount - Sealed Bearings (DC711 & DHT148) - TA Axles, not incl. - Quick Release binder incl. (DC2241) - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Tubeless Valve included)

- Rims: WTB ST i30 (Black), inner width: 30 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Front hub: Shimano HB-MT400-B (Black), Shimano logo, 15mm E-THRU, O.L.D. 110mm BOOST - HG Freehub compatible with 8—10, MTB 11-speed - Quick Engagement Pawl Ratchet (36T / 10deg engagement) - Center Lock disc mount - Adjustable bearings - E-THRU Axles not included - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Tubeless Valve included)

- Rims: WTB ST i30 (Black), inner width: 30 mm - New TCS 2.0 Tubeless system - Solid Strip (included) protects and ensures a smooth surface between the tire and the rim - Easy On-Ramp profile allows for a smooth tire installation and stress-free inflation - Industrial Epoxy reinforced Pinned Joint provides repeatable tubeless consistency - Drilled for Presta valve - 32 holes - Rear hub: Shimano FH-MT400-B (Black), Shimano logo, 12mm E-THRU, O.L.D. 148mm BOOST - HG Freehub compatible with 8—10, MTB 11-speed - Quick Engagement Pawl Ratchet (36T / 10deg engagement) - Center Lock disc mount - Adjustable bearings - E-THRU Axles not included - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) - Tubeless Compatible (Tubeless Valve included)

Rims: Mavic XM119 Disc 29" (Black) - ETRTO 662-19 - External width: 24mm - Inner width: 19mm - Profile height: 20.5mm - Disc Brake Only - For Schrader or Presta valve (Adapter included) - 32 holes Rear hub: Shimano FH-M525 (Black) - 10x135mm - 6-Bolt Disc Mount - Adjustable Cup & Cone - Contact sealed hub and freehub body - Quick Release Binder included - Compatible with 8,9,10 speed (MTB 11 speed requires 1.85mm spacer, not included) - Assembled in North America by experienced wheel builders with Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black)

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

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

Proterra Tough i30 wheels keep the trail in check while everything else blurs by in the periphery. Reinforced by our proven Dual I-Beam support, Proterra Tough rims feature a 30mm internal width to provide higher tire volume while also increasing sidewall support at lower pressures. High-quality EZO sealed bearings are designed to endure through seasons of aggressive riding, while a responsive 6-pawl freehub provides the snappy 3.7 degrees of engagement you demand when cranking out of corners. Choose Proterra Tough when you need a wheel that won't let you down. - 30mm inner rim width with 32 spokes laced in a 3-cross pattern - 6069 aluminum alloy rim is TCS 2.0 tubeless-ready - Sapim Secure Lock 14-gauge brass nipples provide bomber durability, while double butted 2.0/1.8/2.0mm J-bend spokes make replacement a breeze. - Tubeless tape, Solid Strip, and black alloy valves are preinstalled, making the wheels ready for tubeless tires the moment they arrive on your doorstep. The TCS 2.0 Solid Strip is a durable strip that lies beneath the tape, prevents it from sagging at the spoke holes, makes it easier to mount a tire, and protects from puncture in the case of a broken spoke. - 6-bolt rotor mounts - Top-tier EZO sealed bearings

Proterra Tough i30 wheels keep the trail in check while everything else blurs by in the periphery. Reinforced by our proven Dual I-Beam support, Proterra Tough rims feature a 30mm internal width to provide higher tire volume while also increasing sidewall support at lower pressures. High-quality EZO sealed bearings are designed to endure through seasons of aggressive riding, while a responsive 6-pawl freehub provides the snappy 3.7 degrees of engagement you demand when cranking out of corners. Choose Proterra Tough when you need a wheel that won't let you down. - 30mm inner rim width with 32 spokes laced in a 3-cross pattern - 6069 aluminum alloy rim is TCS 2.0 tubeless-ready - Sapim Secure Lock 14-gauge brass nipples provide bomber durability, while double butted 2.0/1.8/2.0mm J-bend spokes make replacement a breeze. - Tubeless tape, Solid Strip, and black alloy valves are preinstalled, making the wheels ready for tubeless tires the moment they arrive on your doorstep. The TCS 2.0 Solid Strip is a durable strip that lies beneath the tape, prevents it from sagging at the spoke holes, makes it easier to mount a tire, and protects from puncture in the case of a broken spoke. - 6-bolt rotor mounts - Top-tier EZO sealed bearings

Our mid-range Trail wheelset features a wide rim profile for ultimate tire support and contact. Alloy construction for durability and lightweight. - Mid-range Trail wheelset - Alloy construction - Wide profile for trail riding

A system for speed. Our one piece wheelset is a miracle of modern carbon fibre techniques. Hub shell, spokes and rim are molded into one piece producing one of the lightest wheels on the market with three distinct benefits - Torsional & lateral stiffness and low inertia all translating to a faster ride both in accelleration and momentum and better handling. This is the 26mm internal width version of the wheel as used by the Scott-Sram team of Nino Schurter, Kate Courtney, Lars Forster and Andri Frischknecht at the Cross Country World Cup. KEY FEATURES - Used by Scott-SRAM - One piece wheel - Super lightweight XC focused - Tubeless Everready

From 2021 SCOTT-SRAM MTB racing will ride Syncros wheels. The team of Nino Schurter, Kate Courtney, Lars Forster and Andri Frischknecht will all ride Silverton SL one piece carbon wheels at the World Cup. This year we are adding a new wider 30mm version to the teams quiver. For some time now the team riders have been riding 2.4” Maxxis tires on 30mm rims offering them lower rolling resistance and great grip at lower pressures. The new wider version of the Silverton SL offers the same great benefits of the original wheel.

- Light enough to take XC racing but was born from research and testing on the Enduro World Series circuit, making it a great rim for anyone looking to improve both descending and climbing - Asymmetric rim design allows for a stronger wheel while offering the easy inflation and Stan's trademark unmatched airtight seal. - 28mm internal width ideal for 2.2-2.5" tires - Light and durable 6069 aluminum with welded joint and reinforced spoke bed

- Light enough to take XC racing but was born from research and testing on the Enduro World Series circuit, making it a great rim for anyone looking to improve both descending and climbing - Asymmetric rim design allows for a stronger wheel while offering the easy inflation and Stan's trademark unmatched airtight seal. - 28mm internal width ideal for 2.2-2.5" tires - Light and durable 6069 aluminum with welded joint and reinforced spoke bed

- Asymmetric rim design allows for a stronger wheel while offering the easy inflation and Stan's trademark unmatched airtight seal. - 25mm width optimized for 40mm Gravel tires and up to 2.3" mountain tires - Light and durable 6069 aluminum with welded joint and reinforced spoke bed