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Koppenberg Dark Energy DMX-R90 Rear Wheel 90mm deep 25mm wide 985g

Precision hand built to Special Order in 4 - 5 weeks
Calculated at checkout
* Drive:
* Hub Colour:
* Rider Weight:

The ultimate multi-course fast non-disc rear wheel

If you need to ride really fast, like Catherine Jameson did to win the 2015 Zurich and Embrun 5150s, and below on her way to podium at the 2016 Challenge Denmark, then this Dark Energy super aero rear wheel is just what the Doctor ordered. 

Just in: 220 Triathlon Magazine's review of the DMX960s as part of Issue 309's Big Group Test for Race Wheels


More Grip. More Speed. Thanks to the Spin Fat Boy Rim Physics.

This super quick rear wheel was engineered with the focus squarely on optimising its trailing edge dynamics. With the wheel slotted into your bike's rear triangle, its leading edge, shielded by the frame's seat tube is very much less important than what happens to the airflow out at the back end.  By considering the wheel & tyre as a unified system aero optimised at the trailing edge, the DMX-R90 tames and calms the turbulence that's generated as airflow exits the bike. Massive speed and cross-wind stability are thus assured.

The 25mm external width generates a MotoGP style arced tyre profile with 23-25mm tyres, guaranteeing super low rolling resistance on the straights with sure-footed turn-in and huge mid-corner grip.

Here at the Speed Shop, every wheel is precision hand built to ensure that the extremely high spoke tensions we demand are fully stress relieved and evenly balanced around the rim. The result is strong, durable wheels with the immense lateral stiffness required to elevate steering precision & power transfer to unprecedented high levels.

Dark Energy DMX-R90s roll on the lightweight forged & CNC machined SPN alloy R50 hub. With 48-point HyperDrive engineering maximum power is always on tap and instantly available. You’ll find zero lag, slop or slack in this drivetrain.

And for a wheel this quick, only the toughest Dark Matter hybrid ceramic braking surface and finest Belgian aero bladed Sapim CX Ray spokes will do. 11-speed ready. Average weight 985g.






DMX960 Dark Energy Review in 220Tri


K2Carbone X Series delivers ultimate speed 25mm SuperWide 3DToroid rim profile Sapim CX Ray aero bladed spokes Instant pick-up with HyperDrive-48 engagement 11 speed compatible Shimano / SRAM / Campag

Warranty Information

Warranty - One year
Crash Replacement Program - Five Years

Product Specifications

Weights (average, grams):
Rim Width, Depth (mm) & Profile:
25 wide x 90 rear / 3D2 Toroid
Spokes - 24:
Stainless steel Sapim or Mach 1 bladed aero 2-cross drive / radial non-drive
11 Speed Drivetrain:
Shimano/SRAM standard
What's In The Box:
Rim tape, Dark Matter ceramic carbon brake pad pair

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