SDI
SDI specializes in high-performance suspension components and tuning parts for motorcycles, ATVs, UTVs and motocross applications. The brand is known for precision-engineered fork service kits, lowering pull rods and suspension linkage systems designed to improve handling and ride control. Its product range supports key categories like motorcycle suspension tuning, fork rebuild kits and off-road suspension upgrades for Yamaha, KTM, Honda and other major platforms.
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Sdi - 13120921 - Shock Spring - RZR XP1K Two Seater
SDI
$799.95Sdi - 13120921 - Shock Spring - RZR XP1K Two SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$799.95 -
Sdi - 13120920 - Shock Spring - X3/RS Max
SDI
$949.95Sdi - 13120920 - Shock Spring - X3/RS MaxFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out resistance)Durable...$949.95 -
Sdi - 13120919 - Shock Spring - X3/RS
SDI
$949.95Sdi - 13120919 - Shock Spring - X3/RSFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out resistance)Durable...$949.95 -
Sdi - 13120918 - Shock Spring - RZR Turbo S Velocity Four Seater
SDI
$949.95Sdi - 13120918 - Shock Spring - RZR Turbo S Velocity Four SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming...$949.95 -
Sdi - 13120917 - Shock Spring - RZR Turbo S Velocity
SDI
$949.95Sdi - 13120917 - Shock Spring - RZR Turbo S VelocityFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$949.95 -
Sdi - 13120916 - Shock Spring - RZR Turbo S (Fox)
SDI
$949.95Sdi - 13120916 - Shock Spring - RZR Turbo S (Fox)FeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$949.95 -
Sdi - 13120915 - Shock Spring - RZR XP Turbo Two Seater
SDI
$949.95Sdi - 13120915 - Shock Spring - RZR XP Turbo Two SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$949.95 -
Sdi - 13120914 - Shock Spring - RZR XP Turbo Four Seater
SDI
$949.95Sdi - 13120914 - Shock Spring - RZR XP Turbo Four SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$949.95 -
Sdi - 13120913 - Shock Spring - Talon X4
SDI
$899.95Sdi - 13120913 - Shock Spring - Talon X4FeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out resistance)Durable...$899.95 -
Sdi - 13120912 - Shock Spring - Talon R
SDI
$899.95Sdi - 13120912 - Shock Spring - Talon RFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out resistance)Durable...$899.95 -
Sdi - 13120911 - Shock Spring - RZR XP1K/WER XP Turbo Four Seater
SDI
$899.95Sdi - 13120911 - Shock Spring - RZR XP1K/WER XP Turbo Four SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming...$899.95 -
Sdi - 13120910 - Shock Spring - RZR XP1K Four Seater
SDI
$899.95Sdi - 13120910 - Shock Spring - RZR XP1K Four SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$899.95 -
Sdi - 13120909 - Shock Spring - RZR XP1K Two Seater
SDI
$899.95Sdi - 13120909 - Shock Spring - RZR XP1K Two SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$899.95 -
Sdi - 13120908 - Shock Spring - RZR XP1K Two Seater
SDI
$899.95Sdi - 13120908 - Shock Spring - RZR XP1K Two SeaterFeaturesGives your RZR a true dual rate setup, utilizing both springsGreatly reduces body roll, nose dive (bucking) and bottoming (G-out...$899.95 -
Sdi - 13102557 - Shock - Rear - Ridge
SDI
$1,592.95Sdi - 13102557 - Shock - Rear - RidgeFeaturesRace style quick adjust preload ring accepts any 6 mm tool and locks with pinch boltSuper high tensile light weight springs are barrel formed for bow...$1,592.95 -
Sdi - 13102556 - Shock - Rear - Pioneer 1000
SDI
$1,592.95Sdi - 13102556 - Shock - Rear - Pioneer 1000FeaturesRace style quick adjust preload ring accepts any 6 mm tool and locks with pinch boltSuper high tensile light weight springs are barrel formed for...$1,592.95 -
Sdi - 13102555 - Shock - Rear - Defender HD10 - 64"
SDI
$1,592.95Sdi - 13102555 - Shock - Rear - Defender HD10 - 64"FeaturesRace style quick adjust preload ring accepts any 6 mm tool and locks with pinch boltSuper high tensile light weight springs are barrel...$1,592.95 -
Sdi - 13102554 - Shock - Rear - Defender HD10 - 65"
SDI
$1,592.95Sdi - 13102554 - Shock - Rear - Defender HD10 - 65"FeaturesRace style quick adjust preload ring accepts any 6 mm tool and locks with pinch boltSuper high tensile light weight springs are barrel...$1,592.95 -
Sdi - 13102553 - Shock - Rear - Ranger XP 1000
SDI
$1,592.95Sdi - 13102553 - Shock - Rear - Ranger XP 1000FeaturesRace style quick adjust preload ring accepts any 6 mm tool and locks with pinch boltSuper high tensile light weight springs are barrel formed for...$1,592.95 -
Out of stock
Sdi - 13102511 - Shock Set - Front - Kawasaki Ridge
SDI
$1,592.95Sdi - 13102511 - Shock Set - Front - Kawasaki Ridge Features Race style quick adjust preload ring accepts any 6 mm tool and locks with pinch bolt Super high tensile light weight springs are...$1,592.95 -
Sdi - 13102510 - Shock Set - Front - Honda Pioneer 1000
SDI
$1,592.95Sdi - 13102510 - Shock Set - Front - Honda Pioneer 1000 Features Race style quick adjust preload ring accepts any 6 mm tool and locks with pinch bolt Super high tensile light weight springs are...$1,592.95 -
Sdi - 13102506 - Shock Set - Front - Polaris Ranger XD 1500
SDI
$1,592.95Sdi - 13102506 - Shock Set - Front - Polaris Ranger XD 1500 Features Race style quick adjust preload ring accepts any 6 mm tool and locks with pinch bolt Super high tensile light weight springs...$1,592.95 -
Out of stock
Sdi - 13020704 - Radius Rod - '11-'14 RZR XP 900
SDI
$472.95Sdi - 13020704 - Radius Rod - '11-'14 RZR XP 900FeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment bushingsMade...$472.95 -
Out of stock
Sdi - 13020703 - Radius Rod - '14-'16 RZR 1000
SDI
$472.95Sdi - 13020703 - Radius Rod - '14-'16 RZR 1000FeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment bushingsMade...$472.95 -
Sdi - 13020702 - Radius Rod - '17-'22 RZR Turbo S
SDI
$499.95Sdi - 13020702 - Radius Rod - '17-'22 RZR Turbo SFeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment...$499.95 -
Out of stock
Sdi - 13020701 - Radius Rod - RZR XP Turbo/XP 1000
SDI
$472.95Sdi - 13020701 - Radius Rod - RZR XP Turbo/XP 1000FeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment...$472.95 -
Out of stock
Sdi - 13020700 - Radius Rod - '20-'22 RZR Pro XP
SDI
$562.95Sdi - 13020700 - Radius Rod - '20-'22 RZR Pro XPFeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment bushingsMade...$562.95 -
Out of stock
Sdi - 13020699 - Radius Rod - Talon X
SDI
$569.95Sdi - 13020699 - Radius Rod - Talon XFeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment bushingsMade in the...$569.95 -
Out of stock
Sdi - 13020698 - Radius Rod - Talon R
SDI
$569.95Sdi - 13020698 - Radius Rod - Talon RFeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and misalignment bushingsMade in the...$569.95 -
Sdi - 13020697 - Radius Rod - 72" - '17-'22 Maverick X3 RS/X3 Max RS
SDI
$704.95Sdi - 13020697 - Radius Rod - 72" - '17-'22 Maverick X3 RS/X3 Max RSFeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and...$704.95 -
Out of stock
Sdi - 13020695 - Radius Rod - 64" - '17-'22 Maverick X3/X3 Max
SDI
$669.95Sdi - 13020695 - Radius Rod - 64" - '17-'22 Maverick X3/X3 MaxFeaturesHeavy-duty equipment replaces OEM rods and hardwareFlats on rods allow for easy adjustmentIncludes rods, rod ends and...$669.95 -
Sdi - 11050260 - Transmission Mount - RZR 170
SDI
$110.95Sdi - 11050260 - Transmission Mount - RZR 170FeaturesLightweight design; superior strength compared to stock componentIncludes all necessary mounting hardwareSpecsTypeTransmissionProduct...$110.95 -
Sdi - 09330142 - Motor Mount - Polaris
SDI
$94.95Sdi - 09330142 - Motor Mount - PolarisFeaturesEliminates flex between the motor and transmissionIncludes all necessary installation hardwareMade in the U.S.A.If holes are undrilled, tap to an M10x1...$94.95 -
Sdi - 05212036 - Accessory Mount - Sleeve - 1.87"
SDI
$5.95Sdi - 05212036 - Accessory Mount - Sleeve - 1.87"FeaturesProtects the tube from damage sustained from clampingAllows the accessory mount clamp to move under impact to prevent damage to the...$5.95 -
Sdi - 05211928 - Accessory Mount - Whip
SDI
$19.95Sdi - 05211928 - Accessory Mount - WhipFeaturesDesigned to rotate on impactMultipurpose clamping system; seven different accessories utilize the same mounting pointTwenty preset pivot positions allow...$19.95 -
Sdi - 05211927 - Accessory Mount - Registration Sticker Plate
SDI
$34.95Sdi - 05211927 - Accessory Mount - Registration Sticker PlateFeaturesDesigned to rotate on impactEasy to installMade in the USASpecsTypeAccessoryStyleRegistration Sticker...$34.95 -
Sdi - 05211926 - Accessory Mount - License Plate
SDI
$48.95Sdi - 05211926 - Accessory Mount - License PlateFeaturesDesigned to rotate on impactEasy to installMade in the USASpecsUnitsEachBase ColorBlackTypeAccessoryColor/FinishBlackProduct NameMountRiding...$48.95 -
Out of stock
Sdi - 05211925 - Accessory Mount - Light Bar - Small - 0.256 mm Diameter
SDI
$19.95Sdi - 05211925 - Accessory Mount - Light Bar - Small - 0.256 mm DiameterFeaturesDesigned to rotate on impact and has a multipurpose clamping system that allows seven different accessories to use the...$19.95 -
Sdi - 05211924 - Accessory Mount - Light Bar - Medium - 0.323 mm Diameter
SDI
$19.95Sdi - 05211924 - Accessory Mount - Light Bar - Medium - 0.323 mm DiameterFeaturesDesigned to rotate on impact and has a multipurpose clamping system that allows seven different accessories to use the...$19.95 -
Sdi - 05211923 - Accessory Mount - Light Bar - Large - 0.402 mm Diameter
SDI
$19.95Sdi - 05211923 - Accessory Mount - Light Bar - Large - 0.402 mm DiameterFeaturesDesigned to rotate on impact and has a multipurpose clamping system that allows seven different accessories to use the...$19.95
SDI Suspension Performance Systems – Motorcycle & Powersports Suspension Tuning, Fork Service Kits & Linkage Components
SDI is a performance-focused brand recognized in the powersports industry for its advanced suspension tuning components and precision-machined upgrade parts. The company develops high-quality solutions such as fork service kits, shock components and linkage systems that improve suspension response, stability and rider control across motocross, enduro and UTV applications. With a strong emphasis on durability and engineering accuracy, SDI products are widely used in both professional racing and recreational off-road environments.
The SDI product lineup includes a wide range of fork service kits, bladder caps, lowering pull rods, linkage arms and shock rebuild components designed for major OEM platforms like Yamaha YZ series, KTM/Husqvarna, Honda CRF and Polaris RZR models. These products create strong internal-link opportunities across categories such as motorcycle suspension parts, fork rebuild kits, shock tuning components and UTV suspension upgrades. Additional solutions like DU piston bushing conversion kits, spring perch sets and floating piston assemblies further expand its presence in advanced suspension tuning systems.
Built for performance and reliability, SDI components are engineered to enhance suspension responsiveness, adjust ride height and optimize handling under demanding riding conditions. Riders benefit from improved traction, better shock absorption and precise suspension tuning for both motocross tracks and off-road terrain. With compatibility across motorcycles, dirt bikes and UTV platforms, SDI continues to be a trusted choice for suspension upgrades, rebuild kits and performance tuning solutions.