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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
The kit also includes our custom primary spring which improves clutch backshift and helps hold peak RPM without as much fade as the factory spring
our design continues to gain power
Stage 2 Proven: Featured as a selectable performance upgrade in our complete Stage 2 Performance Kits
Level 2 - Big Injector Tune - 91 Octane - 140 RWHP (+35 RWHP)
Pro RMK 850 MATRYX SLASH w/155"x2
Billet Head Kit / AXYS 800 '15-17 SKU # 04-316 Category_Default Category/SLED/Polaris/Matryx BOOST The kit also includes ourSKU# 04 316 Easy bolt on power for your 800 AXYS! This head has more than twice the cooling capacity to keep your motor running cooler to maintain horsepower by staying below the 120 degree timing curve. This custom BMP head utilizes the larger updated 2018 Polaris thermostat for even more flow! We offer two different dome configurations: 800 37. 5 is a 13: 1 compression ratio that works great in the 6000 9000 ft range and bolts on 7 8 HP in the mid