Magene EXAR Ultra DB508 Carbon Wheelset-50/58mm (Disc Brake)

• Lower front wheel and higher rear wheel design ensures better controlling
• Carbon fibre spokes have better stiffness and lighter weight
• 30mm outer rim width to improve aerodynamic efficiency
• Ceramic bearing lowers resistance and weight
• 36-tooth rachet features larger engagement surface
• Optimal hub structure retains lateral stiffness and durability
• Rim and spokes are all made of HI-MOD carbon fibre
• Ultralight weight 1,350g
• Warranty: 2 years

Features:

Exquisite Design, Ingenious Interaction
EXAR Ultra carbon fiber wheelset applies HI-MOD carbon fiber, following the integral and systematic design. The primal materials allow great reduction on weight while retaining outstanding stiffness. This helps you get a smooth start and easier acceleration. *The wheelset weight in the table does not include the weight of quick-release skewer and rim tape; A tolerance of ±3% applies to the weight, and the actual wheelset weight should prevail.

30/32mm Wide Fat Rim – Aerodynamic And Comfortable
The external rim width of DB405 and DB508 is 30mm, that of DB607 is 32mm for front wheel and 30mm for rear wheel. The internal width of all are 23mm. It ensures optimal aerodynamic performance in complex wind conditions, improving stability in crosswinds as well. After installing the 28-32c tire, the contact surface between tire and rim is flat. As a result, It creates a flatter aerodynamic surface and enhances cycling comfort. (*The wheelset rim width is measure at the widest part of the wheel).

Lower Front Wheel and Higher Rear Wheel – Combine High Inertia And Stability
The wheelset combines lower front wheel and higher rear wheel. While the rear wheel maintains high inertia, the front wheel still has excellent controllability. This avails you to ride efficiently and stably.

• DB405 Ultra Optimal choice for climbing
• DB508 Ultra Balanced choice for both climbing and cruising
• DB607 Ultra Optimal choice for cruising

Full Carbon Fiber Spokes with Scientific Lacing – Contribute Ultra-Stiffness
EXAR Ultra carbon fiber wheelset adopts HI-MOD carbon fiber spokes from VONOA. Each spoke weighs only 2.8g and has better stiffness. Compared with top steel spokes, Ultra’s spoke is 30% lighter and can withstand 30% more tensile force. Lower strength loss of transmission brings higher driving efficiency. Featuring latest patent, we hide the metal accessories on spokes, while making it wider and thinner. Thus, you can get lower wind resistance with smooth and simplified design. The wheelset applies 2:1 balanced lacing pattern, which distributes tension perfectly.

Elaborate Hub Design
The flange diameter has been calculated scientifically in terms of the stiffness of carbon fiber spokes. We reduce the amount of stress concentration point where spoke contacts with hub, thus improving driving stiffness and extending endurance. The contact surface of bearing and body is processed with smooth edges to create precise synergy. The WR size of the rear hub is 18.2mm. This ensures spoke tension of drive side and non-drive side to be similar, achieving excellent lateral stiffness.

Ceramic Bearings, Smooth And Durable
Compared to steel, ceramic is light-weight with low resistance, which can be used to make smoother bearings. A well-made ceramic bearing has lower resistance, thus saving you energy and allowing rapid acceleration.

Flat Engagement Ratchet – Ensure Stable Performance
The EXAR Ultra series features a 36-tooth flat ratchet system, which has greater engagement force with larger surface. This design enhanced durability of ratchet, ensuring fast and precise engagement with improved stability. The rotating sound is smoother and more consistent with use of flat wire spring. Additionally, the ratchet system allows for easy replacement with other ratchets of varying tooth counts, offering increased versatility and customization.

Professionally Tested, Approved by UCI
EXAR Ultra wheelsets have passed UCI impact tests. After applying an energy of 40 J on the bare carbon rim, the deviation complies with UCI standard. The wheelset is compatible with tubeless tire and clincher tire. It comes with tubeless rim tape and rim plugs. While installing clincher tire, you could use rim plugs to reduce weight. The dynamic balance is exclusively designed for TPU inner tube. You will enjoy a stable cycling at high speed.

Specifications:

• Product Name: EXAR Ultra Series 2025 Carbon Wheels
• Model: Ultra DB508
• Brake: Disc Brake
• Height: Front Wheel 50mm, Rear Wheel 58mm
• External Rim Width: 30mm
• Internal Rim Width: 23mm
• Rim Material: HI-MOD Carbon Fiber
• Spoke: HI-MOD Carbon Fiber
• Front Wheel Spoke Tension: 110kgf±10%
• Rear Wheel Spoke Tension: Drive Side 130kgf±10%, Non-drive Side 110kgf±10%
• Front Wheel Spoke Lacing: 21H 2:1, Brake Side×2, Non-brake Side Radial Lacing
• Rear Wheel Spoke Lacing: 21H, 2:1, Drive Side×2, Brake Side Radial Lacing
• Ratchet: 36T (Compatible with DT System. Replaceable Ratchet with Different Tooth Amount)
• Frame Spacing: 100/142mm thru-axle
• Freehub Standard: Shimano 11-speed (Campagnolo N3W and Sram XDR Freehubs are available separately)
• Compatible Cassette: SHIMANO 8-12 speed, SRAM 8-12 speed (Available separately for XDR cassette body for 12-speed), Campagnolo 8-13s (require separate N3W freehub)
• Compatible Tire Type: Clincher Tire, Tubeless Tire
• Maximum Tire Pressure: Clincher tire: 110psi for 28c, 100psi for 30c, 90psi for 32c // Tubeless tire: 100psi for 28c, 90psi for 30c, 80psi for 32c // Clincher tire 120psi for 25cTubeless tire 110psi for 25c
• Compatible Tire Width: Compatible with 25c Tire and Above, Suggested Tire Width is 28c – 32c
• Weight: 1350g ±3%

In the box:

• Carbon fiber front wheel x1
• Carbon fiber rear wheel x1
• Tubeless rim tape x2
• Rim plug x50
• tubeless tire valve x2
• User manual x1