Leeze
CH 40 BASIC GX
CH 40 BASIC GX
Standard / Shimano / Black
Leeze Bike Store
Hohenholter Straße 25
Leeze GmbH
48329 Havixbeck
Germany
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Leeze CH 40 BASIC GX. Your no-compromise gravel setup for maximum control and durability
The CH 40 BASIC GX is designed for true gravel riding—for rough terrain, long distances, and maximum control when the ground becomes unpredictable. Stability, traction, and a responsive ride feel on gravel, forest trails, and rough terrain set this dedicated gravel wheelset apart.
The low 40-mm rim profile, combined with the robust carbon layup, ensures excellent crosswind stability, direct steering precision, and reliable handling—even for heavier riders, bikepacking setups, or technically demanding descents.
With a 28 mm hookless rim width, the CH 40 BASIC GX is specifically designed for wide gravel tires. The result: optimal tire fit, low tire pressure, maximum contact patch, and noticeably greater comfort and traction on loose surfaces.
Built with the new Leeze BASIC hubs and 24 double-crossed SAPIM straight-pull spokes, this wheelset is extremely sturdy and durable.
Weighing just 1,370 grams, it remains surprisingly agile for ambitious gravel rides.
- Best gravel performance setup with 40 mm* to 55 mm tires
- Best All-Road Comfort Setup with 40 mm* Tires
- Tire widths from 40 mm* to 70 mm can be used
ETRTO approval: 47-622 to 71-622
Hookless approval required by tire manufacturer (observe maximum pressure!)
*Tires approved by Leeze: Tire approvals 28 mm Hookless
| Weight1 | 1370 g (5% tolerance) | |
| Wheel material | Carbon | |
| Wheel type | 28-622 without hooks | |
| Braking system | Centerlock disc brake | |
| Rim height | 40 mm | |
| Wheel width | 34 mm | |
| jaw width | 28 mm | |
| Logos | white or black, painted | |
| Tire type | Hookless folding/clinch tires, tubeless-ready only | |
| Tire widths | 40*–71 mm | |
| Hub | Leeze Disc BASIC 3.0 VR & HR | |
| freewheel | Shimano 10-/11-/12-speed / SRAM 10-/11-speed, SRAM XDR 12-/13-speed, Shimano Micro Spline; conversion to Campagnolo and Campagnolo N3W possible | |
| Axle standard | 12 mm thru-axle (12x100 mm, 12x142 mm) | |
| Number of spokes | 24/7 | |
| Spokes VR | Sapim CX Delta, 2-cross | |
| Spokes HR | Sapim CX Delta / CX Sprint, 2-cross | |
| Weight limit | 120 kg system weight |
- Wheel set
- Valve stickers to prevent valve rattling (2 pcs.)
- 2x tubeless rim tape (already installed)
Available to match your wheelset: tubeless valves, tire sets, brake rotors, and cassettes.
Leeze GmbH
Hohenholter Straße 25
48329 Havixbeck
Germany
info@leeze.de
Manufacturer's part number:
Here you'll find detailed instructions on how to use and maintain your wheelset:
Please observe the following safety instructions to ensure your safety and the longevity of your wheels. The accompanying or online user manual is an integral part of the product and must be read in its entirety before use.
Do not exceed the specified maximum total weight (rider + bicycle + luggage). Exceeding this limit can lead to equipment failure and cause a fall resulting in serious injury.
Do not exceed the specified maximum tire pressure. Always take into account the combination of tire, rim, and setup (reduced maximum pressures, especially for tubeless and hookless setups)! If different values apply to the wheel and tire, the lower value is always the valid maximum. Excessive pressure can cause a tire blowout and thus lead directly to crashes resulting in serious injuries.
ETRTO approval: 47-622 to 71-622
*Tires approved by Leeze: Tire approvals 28 mm Hookless
Use only tire types and sizes approved in the spec sheet (especially for tubeless and hookless setups). Incorrect combinations can lead to tire failure or the tire coming off the rim, which can directly cause crashes resulting in serious injuries. Hookless approval by the tire manufacturer is required (observe maximum pressure!)
The assembly, disassembly, and maintenance of safety-critical components (e.g., spokes, hub bearings, tubeless setup, brake rotors, thru-axles, cassette) must only be performed by qualified specialist personnel. Improper execution can lead to material failure and serious accidents.
Always tighten thru-axles, cassettes, and brake rotors with a torque wrench, observing the torque values specified by the respective manufacturer. Grease the freehub body before installing the cassette to prevent cogging of the sprockets. When mounting or dismounting tires, use only plastic tire levers as a last resort; never use metal levers or other hard objects to avoid damage to the rim and tire.
Only use the wheelset for its intended purposes (e.g., road bike or gravel); see link: Leeze Application Areas. Only use the wheelset with disc brakes. Do not expose the wheels to high temperatures (e.g., in a car in the sun or leaning against a radiator). Not suitable for downhill, BMX, jumps, cargo transport, or other extreme forms of use.
Regularly check your wheels for cracks, delamination, and damage to spoke holes, brake track, or rim bed. For optimal spoke tension and trueness, we recommend wheel checks every 5,000–10,000 km, every 12–24 months, or after 6 months of inactivity. If damage is suspected, stop riding immediately and contact Leeze service. In case of doubt, discontinue use immediately and consult the manufacturer or a specialist dealer.
Clean rims, spokes, and hubs regularly with mild soap and water; avoid high-pressure cleaners and direct water jets on bearings. Store wheels dry and dry them after wet rides. For extended periods of inactivity (>6 months), we recommend a bearing and wheel check. Clean and grease the freehub system regularly. For tubeless systems, replace sealant and rim tape at least twice a year to prevent damage to spoke nipples. Negligence in maintenance can lead to premature wear, malfunctions, or sudden failure during a ride, thus posing a safety risk.
Stop riding immediately and have the wheels professionally inspected, even for minor or invisible damage. Invisible cracks in the carbon can lead to sudden breakage and a crash.
Tire clearance from 47 mm / 40 mm (tested)*
Max. tire pressure 3.5 bar / 50 PSI
ETRTO approval: 47-622 to 71-622
*Tires approved by Leeze: Tire approvals 28 mm hookless
Do you ride with gravel tires under 47 mm, or would you like to ride with higher tire pressure (up to 5.0 bar)? Then our Leeze AR wheels are the right choice for you:
- Road Aero Comfort Setup: 32–35 mm
- Optimal gravel performance setup: 40–50 mm
Now with a 28 mm hookless jaw opening
Leeze GX Series
The new Leeze BASIC GX in the CH 40 and CH 50 versions are designed specifically for wide gravel tires, featuring a 28mm hookless inner rim width. They provide an even better tire fit and allow for lower tire pressures, maximizing the contact patch.
The result: noticeably greater comfort, traction, and performance on loose surfaces.
Agile and rugged off-road.
Gravel | GX |
Leeze Gravel wheels combine a sturdy yet lightweight design that performs reliably even in challenging gravel conditions, offering you plenty of agility and stability. Lightweight, highly agile, and optimized for wide gravel tires, GX wheels are the go-to choice for tough rides on rough terrain. Available in carbon and aluminum, they are the perfect choice for demanding rides on rugged terrain.
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