This is the complete kit to turn your stock 2022-Current Polaris 850 boost into a fire breathing 9R Boost! Increased throttle response on the bottom end with more pull through the mid range and top end. Kit includes a complete 9R top end kit (No cores needed!) and custom 900 Boost ECU reflash.
Kit Contents:
OEM 9R Pistons
9R OEM Cylinder
9R High-Flow Y-Pipe
9R Powervalve Assembly
All Required Gaskets
SLP Billet Boost 9R Head
Indy Specialty Polaris E-VES alingment tool
*You will be required to send your ECU to BBA for the 900 ECU reflash
Highly recommended options:
-Fire N' Ice Performance Big Air Intake for Polaris Matryx
-Ibexx Hyper Velocity Intake (HVI)
-Boondocker Breath Right Air Intake
-Diamond S Boost silencer or SLP Boost silencer
*The 9R Boost kit does require the use of 50% race fuel (100LL or 110 Race gas) and 50% 91 Non Ehtanol fuel