850 PRO-TUNE SPEED KIT   View larger

PRO-TUNE MOUNTAIN KIT POLARIS 850

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If you have a Polaris 850, we have a powerful and simple kit for you!  Our ECU Pro-Tune cranks out some serious power gains, and our Pro-Shift clutch kit puts that power to the snow!   Our clutch kits accelerates hard and have instant throttle response in deep snow.  Though our Pro-Mag weights are adjustable, we have a the setting dialed in for you already.  Track speed gains are impressive!!

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USD $699.95

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If you have a Polaris 850, we have a powerful and simple kit for you!  Our ECU Pro-Tune cranks out some serious power gains, and our Pro-Shift clutch kit puts that power to the snow!   Our clutch kits accelerates hard and have instant throttle response in deep snow.  Though our Pro-Mag weights are adjustable, we have a the setting dialed in for you already.  Track speed with this kit is very impressive! It works!  The holeshot is amazing and the torque gains are powerful. 

2019 models will pick up 9-10 hp.  2020-2021 models will gain 6-8 hp.  

Use your stock muffler and no one will know!   Comes with our pro-mag weight, drive spring, driven spring, and custom helix. 

Send us your ECU for a very quick turn around time, and specify what length track you have for the clutching. 

Send Ecu to:

BLACK DIAMOND / SPEED SHOP INC, 6238 318TH STREET WAY, CANNON FALLS, MN 55009

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PRO-TUNE MOUNTAIN KIT POLARIS 850

PRO-TUNE MOUNTAIN KIT POLARIS 850

If you have a Polaris 850, we have a powerful and simple kit for you!  Our ECU Pro-Tune cranks out some serious power gains, and our Pro-Shift clutch kit puts that power to the snow!   Our clutch kits accelerates hard and have instant throttle response in deep snow.  Though our Pro-Mag weights are adjustable, we have a the setting dialed in for you already.  Track speed gains are impressive!!

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