BC Valve Spring Kit w/ shim in bucket Steel Retainers for Yamaha YXZ

Regular price $ 386.75 Sale price $ 325.00 Save $ 61.75

The Yamaha YXZ 1000R is one of the few unique UTV's that like to rev high RPM's. This valve spring kit has been revved up to 12,000 rpm coupled with a raised rev limit—a significant upgrade for turbo applications and higher-revving tunes. 

This kit is intended for shim in aftermarket bucket setup. Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V titanium alloy for added valve control above 10,000 rpm.Includes:

  • Twelve steel retaining caps
  • Twelve dual-rate valve springs
  • Twelve hardened steel base washers


Type BC1950 Dual
Free Length 1.572" Outer/1.339" Inner
Seat 1.265" @ 76 lbs
Open 0.850" @ 192 lbs
Coil Bind 0.715"
Retainer BC2905B
Spring Seat BC2915
Net Cam Lift 0.490" / 12.44mm

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