Macky's Custom Niner RKT


Bike Check

My goal with this bike was to create the perfect bike for BC Bike Race and Downieville. I wanted something that was light and climbed well but could also handle rough, high-speed descents.  With these things in mind, I opted for a 120mm Fox 34 Float Step Cast Factory fork for the extra stiffness and travel instead of going with the slightly lighter 100mm fork. I took the same approach when picking tires, I went with the Maxxis Aspen 2.4 MaxxSpeed with Vittoria Air Liner Light tire inserts for extra rim protection and the ability to run slightly lower tire pressure in the hopes to get added traction. Finishing off the build I went with a Shimano XTR 12-speed drivetrain, 2-piston XTR brakes with a 180mm rotor on the front and 160mm rotor on the back, Fox Transfer SL dropper post and Float SL shock, Velo Senso Ray saddle and Xpedo M-Force 8 XC pedals.

Check out the build VIDeo

Detailed Specs


Cranks: Shimano XTR
Power Meter: Stages XTR Left Arm
BB: Enduro Bearings XD15

Saddle + Seat Post

Saddle: Velo Senso Ray
Seat Post: Fox Transfer SL Dropper (100mm)


Fork: Fox 34 Step-cast Factory (120mm)


Stem: PRO Bikegear Tharsis Alloy (60mm)
Headset: Enduro Bearings XD15
Top Cap: Niner YAWYD


Shock: Fox Float DPS (100mm)


Front + Rear: Maxxis Aspen 2.4″ MaxxSpeed

Macky's Custom Niner RKT - Drivetrain


Cassette, Derailleur, Chain: Shimano XTR, 12 spd (11-51T)
Brakes: Shimano XTR hydraulic centre lock, 
Rotors: Shimano XTR (160mm rear, 180mm front)


Bars: PRO Bikegear Tharsis 3Five Carbon Minirise
Grips: Velo Attune Firm


I went with the TR35’s over the traditional XC TR32’s to get the slightly wider rim internal. This also helps maintain the sturdier build I was going for with this bike. Lacing in the super light DT180 hubs and Berd polymer spokes should help reduce the weight.


Wheelset: 28h TR35
Graphics: Custom Colour Match
Nipples: Sapim Double Square Alloy

Hubs + Spokes

Hub: DT Swiss 180
Hub Specs: Boost, Centerlock
Spokes: Berd Polylight