
Rocky Mountain Snow MX 720-263-7533
2018 Yamaha YZ450F with a 2018 Yeti 129SS for Sale $14,600
The bike and kit have 76 hours on them. We pulled the stock motor at 60 hours, and sent it to Bundy Built Motorsports in NC who builds many of the top Supercross motors. The motor which in stock form puts down 42hp at the rear wheel on Vickery Motorsports dyno here in Denver. After the motor build, it put down 65hp. at the rear wheel. This is a monster power improvement! There was no expense spared on this motor. It has a aftermarket custom crank, custom long rod, custom raised pin 15.3:1 piston, heavy clutch basket, Rekluse CX auto clutch, custom ground cam, major port work, along with a rim polished transmission.
C3 intake, Yoshimura full exhaust
Vortex PR2 ECM tuned to this motor on the dyno and on the snow with a Wide band o2. This set up runs a solid 13:1 AFR on the snow.
The many accessorieson this bike for snow are: custom springs and valving in front forks, Cyclops explorer headlight, ProMotoBillet risers, ProMotoBillet one piece top clamp and hand guards, heated Raze bars, Bullet Proof Designs radiator guards, Raze thermostat, P3 carbon fiber exhaust guard, EarthX battery, Seat Concepts seat, GYTR skid plate, C3 jump box cable adapter, stuck straps, ProMotoBillet adventure foot pegs with F6 cleats.
This bike was built as a show bike for Rocky Mountain Snow MX LLC. It has been tested and used by us for the last three seasons. If you are looking for BIG power in a YZ package, this bike is truly awesome!!!! There has been over $30K
spent on this build, $8000 just in motor and performance mods.
All updates have been done to the Yeti system including a 2020 ski.
Feel free to contact us. Call, txt, email, of IM is fine.
toby@rockymountainsnowmx.com







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