If you're running a Walker Evans-equipped RZR XP Turbo Four Seater, suspension geometry matters—and this dual-rate spring setup is engineered to deliver measurable improvements in handling and comfort. The SDI Shock Spring reduces body roll, eliminates...

If you're running a Walker Evans suspension setup on your RZR XP Turbo Two Seater, this shock spring kit transforms your ride quality and handling characteristics. The dual-rate spring design eliminates the compromise between comfort and control, giving...

Stock RZR Turbo S suspension struggles with body roll and dive under aggressive driving, limiting your confidence in technical terrain. This dual-rate spring system transforms your Fox shocks into a true two-stage setup that soaks up impacts while...

If you're running a Walker Evans suspension setup on your RZR Turbo S Velocity, the factory spring package simply won't deliver the precision tuning your machine demands. The SDI Shock Spring kit eliminates the compromises—body roll, nose dive, and...

If you're running a Walker Evans suspension setup on your RZR Turbo S Velocity Four Seater, shock spring tuning directly impacts how your machine handles rough terrain and aggressive driving. This SDI dual-rate spring system eliminates the compromises of...

If you're running a RZR with Walker Evans shocks, you know that suspension tuning can make or break your performance on rough terrain. The SDI Shock Spring delivers a true dual-rate setup that eliminates the guesswork, giving you measurable improvements...

If you're running a Walker Evans equipped RZR, suspension geometry matters—and stock spring rates won't cut it for serious terrain. The SDI Shock Spring X3/RS Max delivers a true dual-rate setup that actively reduces body roll, nose dive, and bottoming,...

If you're running a Walker Evans-equipped RZR XP1K Two Seater, suspension geometry matters—and a poorly tuned spring rate will cost you in handling precision and comfort. The SDI Shock Spring delivers a true dual-rate setup that reduces body roll,...

If you're running a Walker Evans-equipped RZR XP1K, suspension geometry is everything—and OEM springs simply can't deliver the tuning precision that serious off-road driving demands. The SDI Shock Spring kit transforms your suspension into a true...

The SDI Shock Spring kit transforms your RZR XP1K Four Seater's handling by delivering a true dual-rate suspension setup that actively manages body roll, nose dive, and bottoming—issues that compromise both comfort and control on demanding terrain...

If you're running a Walker Evans suspension setup on your RZR XP Turbo Four Seater, a properly tuned shock spring package is critical to controlling weight transfer, minimizing body roll, and preventing bottoming during aggressive driving. The SDI Shock...

If you're running a Walker Evans suspension setup on your RZR XP Turbo or XP1K Four Seater, shock spring tuning is where precision handling gets dialed in. The SDI Shock Spring delivers a true dual-rate setup that eliminates the compromise between...

Proper clutch alignment is non-negotiable when assembling or rebuilding your drivetrain—misalignment causes premature wear, vibration, and catastrophic failure. The SDI Clutch Alignment Tool ensures your motor and transmission shafts are perfectly...

Misaligned clutch shafts introduce unnecessary wear on your drivetrain and compromise the precision your build demands. The SDI Clutch Alignment Tool ensures your motor and transmission shafts are perfectly centered during installation, eliminating...

Proper shaft alignment is non-negotiable when assembling a motor-to-transmission interface—misalignment leads to premature bearing wear, vibration, and catastrophic drivetrain failure. The SDI Clutch Alignment Tool ensures your input and output shafts...

Proper clutch alignment is non-negotiable when assembling or rebuilding your drivetrain—misalignment causes premature wear, vibration, and potential catastrophic failure. The SDI Clutch Alignment Tool ensures your motor and transmission shafts are...

Proper clutch alignment is non-negotiable when reassembling your engine and transmission—misalignment leads to premature wear, vibration, and catastrophic drivetrain failure. The SDI Clutch Alignment Tool ensures your input and output shafts are...

Proper clutch alignment is non-negotiable when assembling or rebuilding a drivetrain—misalignment leads to premature wear, binding, and potential catastrophic failure. The SDI Clutch Alignment Tool (DTPZRCAT-E) ensures precise concentricity between your...

Stock plastic pistons are a liability in high-demand applications—they lack the durability and consistency needed for reliable performance under pressure. The SDI Free Piston Assembly replaces that weak link with a purpose-built component that maintains...

The SDI Free Piston Assembly upgrades your equipment with a metal construction that outlasts standard plastic alternatives, delivering superior durability under demanding conditions. Pre-assembled with all necessary bushings, o-rings, and seals, this...