SDI
SDI Steering Knuckles, Hubs, and Suspension Parts at JJ Motorsports
SDI is a specialized brand in the powersports industry, focusing on heavy-duty steering and suspension components for UTVs such as Polaris RZR, Can-Am Maverick, Talon, and Commander. Emphasizing superior strength, lightweight designs, and race-proven performance, SDI products replace weak stock parts to improve safety, handling, and durability in off-road and racing environments.
At JJ Motorsports, we offer a wide range of SDI products, including the race-proven Steering Knuckle - Race Edition for reduced bump steer, the lightweight Heavy Duty Front Hub for Polaris RZR to minimize rotating mass, the adjustable Tie Rods for Talon R with flats for easy tuning, the modular Radius Rods - 64" for enhanced strength, the flexible Accessory Mount Clamp that rotates on impact, and the rigid Motor Mount for Polaris to reduce flex and wear. Whether you're prepping for races or rugged trails, SDI delivers reliable upgrades compatible with major UTV brands. Explore our selection to find the perfect additions for your vehicle.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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SDI DU Piston Bushing Conversion Kit - 50 mm DRPBK-SH50
SDI
$15.95DU Piston Bushing Conversion Kit - 50 mm Replaces stock wear band; standard piston rings often wear dramatically in the first five hours changing low-speed damping, Designed to lower friction and...04500617- SKU:
- 04500617
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
SDI DU Piston Bushing Conversion Kit - 36 mm DRPBK-WP36
SDI
$15.95DU Piston Bushing Conversion Kit - 36 mm Replaces stock wear band; standard piston rings often wear dramatically in the first five hours changing low-speed damping, Designed to lower friction and...04500618- SKU:
- 04500618
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
SDI DU Piston Bushing Conversion Kit - 46 mm DRPBK-WP46XPL
SDI
$15.95DU Piston Bushing Conversion Kit - 46 mm Replaces stock wear band; standard piston rings often wear dramatically in the first five hours changing low-speed damping, Designed to lower friction and...04500619- SKU:
- 04500619
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$15.95 -
SDI DU Piston Bushing Conversion Kit - 50 mm DRPBK-WP50
SDI
$15.95DU Piston Bushing Conversion Kit - DRPBK-WP50 Replaces stock wear band for enhanced performance Designed to lower friction and improve efficiency Ensures consistent damping throughout...04500620- SKU:
- 04500620
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$15.95 -
SDI DU Piston Bushing Conversion Kit - 50 mm DRPBK-WP5016
SDI
$15.95DU Piston Bushing Conversion Kit - 50 mm Replaces stock wear band; standard piston rings often wear dramatically in the first five hours changing low-speed damping, Designed to lower friction and...04500621- SKU:
- 04500621
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$15.95 -
SDI DU Piston Bushing Conversion Kit - 50 mm DRPBK-WP50PDS
SDI
$15.95DU Piston Bushing Conversion Kit - 50 mm (DRPBK-WP50PDS) Replaces stock wear band for enhanced durability. Standard piston rings often wear within the first five hours. Designed to...04500622- SKU:
- 04500622
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$15.95 -
SDI DU Piston Bushing Conversion Kit - 40 mm DRPBK-KYB40
SDI
$15.95DU Piston Bushing Conversion Kit - 40 mm Replaces stock wear band; standard piston rings often wear dramatically in the first five hours changing low-speed damping, Designed to lower friction and...04500623- SKU:
- 04500623
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$15.95 -
SDI Fork Service Kit - 43 mm KFSK43
SDI
$79.95Fork Service Kit - 43 mm - KFSK43 Comprehensive kit designed specifically for 43 mm forks. Includes all essential components for a complete fork service. High-quality materials ensure...04500625- SKU:
- 04500625
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$79.95 -
SDI Fork Service Kit - 46 mm KFSK46
SDI
$79.95Fork Service Kit - 46 mm Contains all the parts needed to service your forks04500626- SKU:
- 04500626
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$79.95 -
SDI Fork Service Kit - 48 mm KSFK48
SDI
$79.95Fork Service Kit - 48 mm Contains all the parts needed to service your forks04500627- SKU:
- 04500627
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$79.95 -
SDI Fork Service Kit - 37 mm SFSK37
SDI
$74.95Fork Service Kit - 37 mm Contains all the parts needed to service your forks04500628- SKU:
- 04500628
- Availability:
- Ships Same Business Day
- Weight:
- 0.43 LBS
$74.95 -
SDI Fork Service Kit - 47 mm SFSK47
SDI
$74.95Fork Service Kit - 47 mm Contains all the parts needed to service your forks04500629- SKU:
- 04500629
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$74.95 -
SDI Fork Service Kit - 48 mm SFSK48
SDI
$79.95Fork Service Kit - 48 mm SFSK48 Comprehensive kit for efficient fork servicing Includes all essential components for a complete overhaul Designed for 48 mm fork systems for optimal...04500630- SKU:
- 04500630
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$79.95 -
SDI Fork Service Kit - 43 mm WFSK43-AER
SDI
$119.95Fork Service Kit - 43 mm - WFSK43-AER Complete kit for servicing forks with 43 mm diameter. Includes all essential components for a thorough service. High-quality parts ensure optimal...04500635- SKU:
- 04500635
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
$119.95 -
SDI Fork Service Kit - 48 mm WFSK48
SDI
$139.95Fork Service Kit - 48 mm WFSK48 Comprehensive service kit for 48 mm forks Includes all essential components for maintenance High-quality materials ensure durability and reliability ...04500636- SKU:
- 04500636
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$139.95 -
SDI Linkage Arm - Blue SDECLAK16-BLU
SDI
$449.95Linkage Arm - Blue Stiffens initial curve, reducing front to back rocking effect, Reduces deep stroke harshness and hook, Can lower seat height up to 5-10 mm on some bikes, Improves chassis balance,...13020707- SKU:
- 13020707
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
$449.95 -
SDI Linkage Arm - Black SDECLAY10-B
SDI
$449.95Linkage Arm - Black SDECLAY10-B Stiffens initial curve for enhanced stability Minimizes front to back rocking effect for a smoother ride Reduces deep stroke harshness and hook for better...13020709- SKU:
- 13020709
- Availability:
- Ships Same Business Day
- Weight:
- 1.64 LBS
$449.95 -
SDI Linkage Arm - Black SDECLAY18-B
SDI
$449.95Linkage Arm - Black - SDECLAY18-B Stiffens initial curve for enhanced stability Minimizes front to back rocking effect for a smoother ride Reduces deep stroke harshness and hook for...13020711- SKU:
- 13020711
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
$449.95Qty in Cart: 0Quantity:Price:$449.95Subtotal: -
SDI Linkage Arm - Blue SDECLAY18-BLU
SDI
$449.95Linkage Arm - Blue Stiffens initial curve, reducing front to back rocking effect, Reduces deep stroke harshness and hook, Can lower seat height up to 5-10 mm on some bikes, Improves chassis balance,...13020712- SKU:
- 13020712
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
$449.95 -
SDI Lowering Pull Rod - Black SDECPRKT11-B
SDI
$219.95Lowering Pull Rod - SDECPRKT11-B Stiffens initial curve for enhanced handling Reduces wallowing feel for a smoother ride Minimizes deep stroke harshness and hook Can lower seat...13041062- SKU:
- 13041062
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
$219.95 -
SDI Lowering Pull Rod - Black SDECPRKT16-B
SDI
$219.95Lowering Pull Rod - Black Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041063- SKU:
- 13041063
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$219.95 -
SDI Lowering Pull Rod - Black SDECPRKX250-B
SDI
$219.95Lowering Pull Rod - SDECPRKX250-B Stiffens initial curve for enhanced handling. Reduces wallowing feel for a more stable ride. Minimizes deep stroke harshness and hook. Can lower...13041064- SKU:
- 13041064
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
$219.95 -
SDI Lowering Pull Rod - Black SDECPRKX85L-B
SDI
$62.95Lowering Pull Rod - Black Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041065- SKU:
- 13041065
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Lowering Pull Rod - Blue SDECPRKX85SLBLU
SDI
$62.95Lowering Pull Rod - Blue Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041067- SKU:
- 13041067
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$62.95 -
SDI Lowering Pull Rod - Black SDECPRY10-B
SDI
$219.95Lowering Pull Rod - Black Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041068- SKU:
- 13041068
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$219.95 -
SDI Lowering Pull Rod - Black SDECPRKX85XL-B
SDI
$62.95Lowering Pull Rod - Black Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041069- SKU:
- 13041069
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$62.95 -
SDI Lowering Pull Rod - Blue SDECPRY10-BLU
SDI
$219.95Lowering Pull Rod - Blue Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041070- SKU:
- 13041070
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
$219.95Qty in Cart: 0Quantity:Price:$219.95Subtotal: -
SDI Lowering Pull Rod - Black SDECPRY18-B
SDI
$219.95Lowering Pull Rod - SDECPRY18-B Stiffens initial curve for enhanced handling Reduces wallowing feel for a smoother ride Minimizes deep stroke harshness and hook Can lower seat height...13041071- SKU:
- 13041071
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$219.95 -
SDI Lowering Pull Rod - Blue SDECPRY15-BLU
SDI
$219.95Lowering Pull Rod - Blue Stiffens initial curve, reducing wallowing feel, Reduces deep stroke harshness and hook, Can lower seat up to 5-10 mm on some bikes, Improves chassis balance, Precision...13041072- SKU:
- 13041072
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$219.95 -
SDI Bladder Cap - Blue SDESBC52BLU-L
SDI
$62.95Bladder Cap - Blue Machined and anodized *factory* look, Increases volume, giving the shock a more linear feel, Helps keep shock cooler, Uses easy-to-service standard Schrader valve13140701- SKU:
- 13140701
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$62.95 -
SDI Bladder Cap - Blue SDESBC52BLU-S
SDI
$62.95Bladder Cap - Blue SDESBC52BLU-S Precision machined for a factory finish Anodized surface enhances durability and aesthetics Increases shock volume for improved performance Delivers...13140702- SKU:
- 13140702
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$62.95 -
SDI Bladder Cap - Blue SDESBCAKT11-BLU
SDI
$136.95Bladder Cap - Blue Converts stock OEM floating piston to conventional bladder system found on other bikes, Greatly reduces friction caused by the stock floating piston, Increases volume, giving the...13140709- SKU:
- 13140709
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$136.95 -
SDI Bladder Cap - Orange SDESBCAKT11-ORG
SDI
$136.95Bladder Cap - Orange Converts stock OEM floating piston to conventional bladder system found on other bikes, Greatly reduces friction caused by the stock floating piston, Increases volume, giving the...13140710- SKU:
- 13140710
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
$136.95 -
SDI Bladder Cap - Blue SDESBCAKT17-BLU
SDI
$136.95Bladder Cap - Blue Converts stock OEM floating piston to conventional bladder system found on other bikes, Greatly reduces friction caused by the stock floating piston, Increases volume, giving the...13140715- SKU:
- 13140715
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
$136.95 -
SDI Bladder Cap - Black SDESBCH09B
SDI
$59.95Bladder Cap - Black Machined and anodized *factory* look, Increases volume, giving the shock a more linear feel, Helps keep shock cooler, Uses easy-to-service standard Schrader valve13140717- SKU:
- 13140717
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
$59.95 -
SDI Bladder Cap - Black SDESBCH17B
SDI
$59.95Bladder Cap - Black SDESBCH17B Premium machined and anodized finish for a factory look Increases volume for improved shock performance Delivers a more linear feel during rides Helps...13140721- SKU:
- 13140721
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$59.95 -
SDI Bladder Cap - Red SDESBCH17R
SDI
$59.95Bladder Cap - Red SDESBCH17R Precision machined for a factory-like finish Anodized surface enhances durability and aesthetics Increases shock volume for improved performance Delivers...13140722- SKU:
- 13140722
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$59.95 -
SDI Bladder Cap - Black SDESBCH250B
SDI
$59.95Bladder Cap - Black SDESBCH250B Precision machined and anodized for a factory finish Increases shock volume for improved performance Provides a more linear feel during operation ...13140723- SKU:
- 13140723
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$59.95 -
SDI Bladder Cap - Gray SDESBCH250G
SDI
$59.95Bladder Cap - Gray Machined and anodized *factory* look, Increases volume, giving the shock a more linear feel, Helps keep shock cooler, Uses easy-to-service standard Schrader valve13140724- SKU:
- 13140724
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$59.95 -
SDI Bladder Cap - Black SDESBCK19-S
SDI
$59.95Bladder Cap - Black Machined and anodized *factory* look, Increases volume, giving the shock a more linear feel, Helps keep shock cooler, Uses easy-to-service standard Schrader valve13140726- SKU:
- 13140726
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$59.95
