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DM8 SpeedShop Series SL-Nine58 Super Fast Boys 90 & 58mm 1755g/pr

Precision hand built to order: usually 7-21 days but up to 5 weeks during peak periods- please email for more accurate info
Calculated at checkout
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Our super fast and stiff DM9 rear wheel is now paired with the even wider SL58 at the front. Result:  more grip, more comfort and even more insane speed. Available to order now.


***Spring / Summer 2019: Peak Season Alert***

Due to exceptional levels of demand currently built & dispatched around 6 weeks weeks from order

Please accept my apologies for the longer than normal build times. But the best advice I can offer is: the earlier you get your order placed, the higher up my build queue you'll be - and the sooner you'll be slotting these Fat Boys in your bike.

In the meantime, please accept my thanks for your patience and understanding.


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

If you need to ride really fast, like Catherine Jameson did to win the 2015 Zurich 5150 and take the 2016 British middle distance triathlon crown, then this Dark Energy wheelset is just what the Spin Doctor ordered!


The new Dark Energy DMX960 wheels deliver effortless speed thanks to the differential geometry curved spacetime profiling we’ve developed for each rim.

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

Front and rear aren’t just different depths. Each rim employs position-specific foil profiles to shape and form the airflow depending on its position on, in and around bike and rider. The front rim is optimised for superior leading edge performance, setting up airflow as it enters the bike’s core. At the rear we’ve concentrated on trailing edge dynamics to tame the turbulence generated as airflow exits the bike. Massive speed and cross-wind stability are thus assured.

Both front and rear full carbon Fat Boy Rims run 25mm wide at the brake tracks generating a MotoGP style arced tyre profile 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 DMX960s roll on our superlight forged & machined SPN alloy hubset. 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 wheels this quick, only the toughest Dark Matter ceramic hybrid braking surface and finest Belgian aero bladed Sapim CX Ray spokes will do. 11-speed ready. Average weight 1755g /pair.






DMX960 Dark Energy Review in 220Tri

Warranty Information

Warranty - One year
Crash Replacement Program - Five Years

Product Specifications

Weights (average, grams):
Front 770 / Rear 985 / Pair 1755
Rim Width, Depth (mm) & Profile:
Rear 25 wide x 90 deep matt UD // Front 28 wide x 58 deep matt concentric weave // 3D2 Differential Toroid
Spokes Front - 20:
Speed Shop custom elliptical bladed stainless steel aero spoke
Spokes Rear - 24:
Bladed 2-cross drive / round radial non-drive
11 Speed Drivetrain:
Shimano/SRAM standard, Campag Optional
Tubeless Compatible:
Yes - with tubeless specific rim tape, valves, sealant and tyres - Not Supplied
What's In The Box:
SL-Nine58 wheelset. Rim strips, QuickStop ceramic carbon brake pads, Quick Release skewers

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