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The EVP Shift-Tek Silver Spring, used with stock clutching, yields about 2200 RPM engagement. This is high enough for EVP Launch Control programming. For a complete setup, we recommend the Shift-Tek Ultimate Clutch Kit, which pairs the Silver Spring with weights, a turquoise secondary spring, and a helix.
Manufactured by Evolution Powersports. Official specs and resources: EvoPowersports.com.
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