The GW42-52X36TL-CS-UL is a carbon fiber spoked wheelset specifically developed for gravel roads. Its front and rear rim heights are different, balancing the demands of varying road conditions. The front wheel's 42mm low profile features a short curvature section, reducing wind resistance when turning on gravel roads and enhancing maneuverability through narrow lanes. The rear wheel's 52mm high profile optimizes aerodynamics, reducing drag by 12% when cruising on flat roads compared to a straight-sided wheel of the same height. The 30mm internal width accommodates wide tires, suitable for tires from 35-55cm. Low tire pressure enhances grip on gravel roads, while high tire pressure ensures rolling efficiency on paved roads.

The wheelset's core components are optimized in tandem: the main body is constructed of high-modulus carbon fiber, paired with 2g/spindle CS-T32 carbon straight-pull spokes (T-heads), and external aluminum alloy nipples (0.3g/spindle) further control weight. The KOIBIKE RH-CS220 aluminum alloy straight-pull hubs (227±5g/pair) feature gold freehubs. The 36T freehub system offers a minimal engagement angle of 10°, resulting in virtually zero pedaling lag. The center lock design ensures disc brake rotor concentricity tolerance of ≤0.02mm, preventing uneven brake wear. Compatible with Shimano HG/MSR, Campagnolo N3W, and SRAM XDR freehubs, the wheels can be adapted to different gear systems without having to change hubs, making them a highly adaptable choice for gravel road riding and mixed-terrain adventures.

Product Features and Advantages

Adaptable to front and rear rim heights: 

The front rim's 42mm low profile features a "short-thick wave crest design" for enhanced torsion resistance. Lateral deflection during cornering on gravel is ≤0.12mm, resulting in 20% greater agility than rims of the same height. The rear rim's 52mm high profile optimizes aerodynamics, achieving a drag coefficient 0.08 lower than a straight-sided rim at a 15° windage angle, increasing cruising speed by 5%, while balancing gravel handling with paved road efficiency.

Wide tire compatibility and enhanced grip: 

The 30mm internal width utilizes a "curved tread design," providing 30% more contact area with 35-55cm tires compared to a 25mm internal width rim. Within the 30-60 PSI tire pressure range, low pressure (30-60 PSI) is suitable for 35-55cm wide tires, increasing the tread contact patch by 18% for enhanced grip on gravel roads and reducing rolling resistance by 10% compared to wheels of similar specifications.

Lightweight and efficient: 

The wheelset weighs 1157±30g, thanks to lightweight optimizations across multiple components. The CS-T32 carbon spokes (2g/spoke) are 60% lighter than steel spokes, the external aluminum alloy nipples (0.3g/spoke) are 40% lighter than titanium nipples, and the KOIBIKE RH-CS220 hubs (227±5g/pair) are precision-cut to reduce weight by 15%. The direct-pull design of the carbon spokes reduces power transmission by 15%, ensuring more direct pedaling power when climbing and minimizing energy waste. 

Disc brakes and thru-axles ensure stability: 

The center-lock disc brake system, combined with 12×100/12×142mm thru-axles, increases lateral rigidity by 40% compared to quick-release wheels. The concentricity error between the hub flange and the disc brake rotor is ≤0.02mm, and braking response delay is ≤0.2 seconds in rainy, muddy, and sandy conditions. The clearance between the thru-axle and the frame is ≤0.01mm, and even on bumpy gravel roads, wheel radial runout is ≤0.08mm, ensuring stable braking and transmission. 

Multi-Freezer Compatibility and Detailed Design: 

Compatible with Shimano HG/MSR, Campagnolo N3W, and SRAM XDR freehubs. The gold freehub contrasts visually with the black wheels for enhanced recognition.

Product Drawing

Application Areas

Application areas for the  GW42-52X36TL-CS-UL carbon spoke wheel:

Gravel Cycling: 

The 30mm internal width accommodates tires sized 35-55cm wide, enhancing grip on gravel at low tire pressures. The rim height design balances steering agility with smooth-road efficiency, making it ideal for weekend gravel trail riding, navigating potholes while quickly transitioning to paved roads. 

Mixed Terrain Adventures: 

Multi-freezer compatibility allows for compatibility with shifting components sourced from different regions. Its balance of lightweight and durability makes it ideal for 50-150km cross-country mixed-terrain adventures (including gravel, paved roads, and light climbing). The gold freehub and black wheelset pairing enhances its distinctiveness during outdoor riding.

Gravel Racing: 

The aerodynamic advantages of the 52mm rear wheel rim and the efficient transmission of carbon fiber spokes help riders conserve energy on flat sections of the race. The stability of the center-lock disc brake ensures smooth braking during races, making it ideal for performance-focused gravel racers.

Personalized Upgrades: 

The visual combination of black wheels and gold freehub complements most gravel bike colorways. Its multi-freezer compatibility and lightweight design make it a great choice for cycling enthusiasts upgrading their existing wheels to enhance their mixed-terrain riding experience while satisfying their individual aesthetic needs.

Technical Parameters

• D: Disc Brake

• W: Wheel

• 32/42/52: Depth/Height

• 36: Outer Width

• TL: Tubeless

• CS: Carbon Spoke

• UL: Ultra-light
  

The GW42-52X36TL-CS-UL Wheel Show