Two lubricity shims allow spring ends to move more freely. Each zinc plated shim increases engagement by 40-50 RPM Kit includes two slipper shims and three... 4738-16 Valve Spring Shim Kit - 1.480" OD, .765" ID .015" Thickness Each zinc plated shim increases engagement by 40-50 RPM Two lubricity shims allow spring ends to move more freely. Will not work on the Team clutch. SPI Clutch Spider Shim Kit Sm-03244 - UK shims allow spring ends to move more freely. Spi SM-03244 Spring Shim Kit for fits Arctic Catu2122 · Free Delivery · 10 days Replacement · Secure transaction Varying bed weights with added gear, bed-caps, loading up Ram Boxes, etc, we figured this would be really useful. Each zinc plated shim increases engagement by 40-50 RPM. Staying on course with what we do here, if we're going to make a coil spacer, it's going to be unique! Kit includes two slipper shims and three engagement shims.
Free 30-day returns 
Free 30-day returns
