EXAR Carbon Fiber Wheelset UltraDark Series 2024

Elevate Your Ride, Embrace the Road

Classy Night Black Coating

The new night black paint coating paired with dark logos emits an air of sophistication and power, making it the ultimate choice for riders who seek both style and performance. Perfectly complementing any bicycle frame, it enhances the overall aesthetic of your ride, ensuring you feel the thrill of speed at every moment.

Lighter, Then Faster

EXAR UltraDark carbon fiber wheelset applies HI-MOD carbon fiber. The excellent materials allow great reduction on weight while retaining outstanding stiffness. By reducing drive weight, you will get a faster response while climbing or accelerating.

*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.

Lower Front And Higher Rear Wheels

The wheelset combines lower front wheel and higher rear wheel, so as to support riders with better stability. It improves pedaling efficiency by providing excellent aerodynamic performance and crosswind resistance. While the rear wheel maintain high inertia, the front wheel still has excellent controllability. When turning around or in emergency, you can control the bike easily.

Flat Engagement Ratchet, Ensure Stable Performance

Adopt flat ratchet, which has a more stable performance when cruising at all speed. It’s highly free that you could replace the original ratchet with other DT ratchet of different tooth amount. It will response faster when replacing the ratchet with more teeth.

Full Carbon Fiber Spokes,Contribute Ultra-Stiffness

EXAR UltraDark carbon fiber wheelset features VONOA’s carbon fiber spokes. Each spoke weighs only 2.8g, 30% lighter than top-level steel spokes.
Carbon fiber spokes have higher tensile strength and can withstand 30% more tensile force. Lower strength loss of transmission brings higher driving efficiency.

30mm Wide Fat Rim, Aerodynamic And Comfortable

The wheelset adopts 30mm external rim width and 23mm internal rim width, which designs for disc brake only.
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.
It ensures optimal aerodynamic performance in complex wind conditions, and you can enjoy cycling more comfortably.

Elaborate Hub Design

Improve flange diameter: 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.

Smooth edging on bearing surface: The contact surface of bearing and body is processed with smooth edges to reduce bearing losses, creating precise synergy.

2:1 balanced spoke pattern: The wheelset applies 2:1 balanced lacing pattern, which distributes tension perfectly. The spoke tension of rear-wheel drive side is 130kgf±10%, and non drive side is 110kgf±10%. The balance performance is improved by 100% compared with 1:1 lacing pattern.

More Powerful Designs

The dynamic balance is exclusively designed for TPU inner tube, you will enjoy a stable cycling at high speed. & The wheelset is compatible with tubeless tire and clincher tire. It comes tubeless rim tape and rim plug. While installing clincher tire, you could use rim plugs to reduce weight.

Spec

Specifications
Product Name	UltraDark Series 2024
Model	DB405 UltraDark
Brake	Disc Brake
Frame Height	Front Wheel 40mm, Rear Wheel 45mm
Weight	1305g (Include ±3% tolerance on weight Without rim tape and valve)
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 freehub are available separately)
Compatible Cassette	Shimano 8-12 speed
Compatible Tire Type	Clincher tire, tubeless tire
Maximum Tire Pressure	110psi for clincher tire, 100psi for tubeless tire
Compatible Tire Width	Compatible with 25c tire and above, Suggested tire width is 28c-32c
Model	DB508 UltraDark
Brake	Disc Brake
Height	Front wheel 50mm, Rear wheel 58mm
Weight	1390g (Include ±3% tolerance on weight Without rim tape and valve)
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 freehub are available separately)
Compatible Cassette	Shimano 8-12 speed
Compatible Tire Type	Clincher tire, tubeless tire
Maximum Tire Pressure	110psi for clincher tire, 100psi for tubeless tire
Compatible Tire Width	Compatible with 25c tire and above, Suggested tire width is 28c-32c

In the box

Carbon fiber front wheel*1
carbon fiber rear wheel*1
tubeless rim tape*2
rim plug*50
tubeless tire valve*2
User manual*1

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Size	XS	S	M	L
Euro	32/34	36	38	40
USA	0/2	4	6	8
Bust(in)	31-32	33	34	36
Bust(cm)	80.5-82.5	84.5	87	92
Waist(in)	24-25	26	27	29
Waist(cm)	62.5-64.5	66.5	69	74
Hips(in)	34-35	36	37	39
Hips(cm)	87.5-89.5	91.5	94	99

How To Measure Your Bust

With your arms relaxed at your sides, measure around the fullest part of your chest.

How To Measure Your Waist

Measure around the narrowest part of your natural waist, generally around the belly button. To ensure a comfortable fit, keep one finger between the measuring tape and your body.