SA-06 Sulastic Shackle for Rear Axle Prolite Series add Cognito 1" tall block

add Cognito 1" tall block and u-bolt kit if slight rear high rake is desired

Recalibrates Speedometer For Gear Ratios From 2

YEAR MAKE ENGINE 2011 Chevy 6

the last four years have given the S&S engineers plenty of time to discover and eliminate potential problems

SA-06 Sulastic Shackle for Rear Axle Prolite Series add Cognito 1" tall block===SULASTIC IMPROVES: === Smooths out the ride by just replacing the OEM shackle Reduce Vibration and Shocks Not Absorbed by the Leaf springs Stops the Bed Bouncing Improve Stability Reduce Braking Distance Load & Towing Capacity Not Affected Improves Handling and Control of the Vehicle === Set includes: 2 shackles ===