Ultimate 930 Series 15 CV - Plunging 28 spline 4340 Polaris General XP 1000 Premium Gray/Yellow 85-240 Spring: (Engagement 1800-2100

Gray/Yellow 85-240 Spring:  (Engagement 1800-2100 RPM) This is our standard clutch spring found in our P90X HD clutch kits with an engagement of 1800-2100 in most cases

1 tune is included in the price

nice and smooth in low & reverse gears MUCH quicker throttle response and power delivery Throttle by wire limiters disabled AA's wicked timing and fuel curve More mid-range fuel for increased mid-range power and response Misfire detection desensitized correctly (not disabled in order to keep some safety)   Cooler running motor with the fan temps decreased to 185 on / 185 off Winter tunes (runs hotter but safe coolant temps) available for those with cabs/heaters in cold climates

We didn't have any excessive wear or rattle in it even after 1500 race miles on the rack

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Ultimate 930 Series 15 CV - Plunging 28 spline 4340 Polaris General XP 1000 Premium Gray/Yellow 85-240 Spring: (Engagement 1800-2100RCV Ultimate 930 CV joints are an industry leader in high strength and reliability. 100% made in the USA. The housing, bearing cage race have an isotropic finish for reduced friction. The SI15VL 28 plunging 930 CV features a solid 4340 chromoly body for strength, 4340 cage, and 300M race. All CV joints are "race prepped" for maximum performance and longevity. Backed by RCV's "No Questions Asked Limited Lifetime Warranty" against breakage. Black Oxide