Big Bore Complete Kit (900cc) / Patriot 850

The Polaris 850 with its huge 74mm stroke was just asking for a bigger bore and we have done our homework to bring you the 900cc Big Bore. The all-new piston was designed from scratch to accommodate all of the needs of the 900. The all-new 88mm piston is an ultra-high-quality dual ring forged piston. Bikeman exclusive head profile giving you the most focused energy possible to make the most efficient power and maintain knock protection. If you are a technical rider that wants no-lag power the instant you hit the throttle, this kit is for you! There is endless power on tap to get yourself into the best riding situations possible.

• BIG BORE ENGINE KIT (900CC)
• BILLET HEAD KIT
• FAT AZZ PERFORMANCE PIPE (2019+)
• PERFORMANCE MANIFOLD (Y-PIPE)
• STAGE 2 SNYPR CLUTCH KIT
• FACTORY 9R POLARIS PISTONS
• OPTIONAL ECU HARD-FLASH OR TORQUE LINK WITH LICENSE

FEATURES:

• 900 big bore top end kit fits all 2019+ Polaris 850 Axys Sleds
• 195+ horsepower!
• Huge mid-range and torque gain!
• Complete kit with everything you need to go from 850 to 900.

Kit includes:

• BIG BORE ENGINE KIT (900CC)
• BILLET HEAD KIT
• FAT AZZ PERFORMANCE PIPE (2019+)
• PERFORMANCE MANIFOLD (Y-PIPE)
• STAGE 2 SNYPR CLUTCH KIT
• OPTIONAL ECU HARD-FLASH OR TORQUE LINK W/LICENSE

*Turnaround time can vary from 1-15 business days for this kit depending on if core cylinders are in stock. The normal turnaround time is between 3-5 business days.*

Cylinder Core Exchange Options(see drop-down menu above):

If it is peak season please call to verify we have cylinders in stock otherwise we will have to use your cylinders for boring and porting which extends lead time out

1: Purchase Outright - No core cylinder or exhaust valve blades are required to be sent in - Raises kit price by $1600

2: Exchange Parts, MUST send your cylinder & exhaust valve blades within 14 business days. As soon as you do, the $1600 charge will be refunded. Exchange parts not received in that amount of time will have no credit applied, and the customer will have to pay for return shipping.

3: Exchange Parts - Your order will be pulled on our shelf waiting for your exchange cylinder & exhaust valve blades to arrive. Once they arrive, we will normally ship the kit within a few business days. No core charge will be applied since we will have your cylinder prior to shipping the big-bore cylinder.