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9R Conversion kits,  Turn your 650,850 or Boost into a 900cc engine


Through extensive testing these kits  have proven to be an absoulute

monster on the trail or mountain, outperforming a stock 9R   


9R Kit will include an OEM Single ring piston for increased reliability and all neccessary gaskets


Cylinders will be HG-7 Torque plate honed for the best surface finish in the industry,

Which increases overall top end life,

Cylinder is also 5 Axis - CNC Ported for improved air flow for better peak Horse Power


Custom Billet cylinder head inproves water flow in the head and increases cooling

capacity to decrease detonation possiblity,  Domes can be made for whatever application

and fuel type you are running


Sending in a core cylinder is required, if you would like us to send you a kit a core charge will be added.

Once the core is receieved, the core charge will be refunded

Core refund may be subject to deductions if any welding or additional repairs are needed, call or e-mail for full details.

Core Charge-$750

Core must be returned within 20 days of replacement motors arrival, if not returned within a timely manner core charge refund may be subject to partial or total deduction pending time taken to return


Exhaust Needs:

It is recommended that the 9R Y-pipe be used in all applications, 650 Y-pipe can not be re-used


It is also recommended that the 9R pipe is used in all N/A applications, 650 pipe can not be re-used

850 pipe and Y-pipe can be used be will result in less overall peak hp


Factory Boost sleds must run the factory boost pipe or equivalent replacement



Please call or E-Mail for more details

9R Conversion Kit

PriceFrom $2,495.00
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