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 Linkage Spring Cup - Black SDM-2222002-B
SDI
$53.95The stock two-piece plastic spring cup is a weak point in high-stress suspension linkage systems—it can crack under aggressive cornering, heavy braking, or repeated track abuse. The SDI Linkage...13140794- SKU:
- 13140794
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$53.95Qty in Cart: 0Quantity:Price:$53.95Subtotal: -
SDI Linkage Spring Cup - Factory Brown SDM-2222002-FB
SDI
$53.95The factory plastic spring cup is a known weak point in high-stress linkage systems—it flexes under load and can crack or fail during aggressive driving or racing. The SDI Linkage Spring Cup replaces...13140795- SKU:
- 13140795
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$53.95 -
SDI Linkage Spring Cup - Orange SDM-2222002-O
SDI
$53.95The OEM plastic spring cup is a known failure point in high-stress suspension setups, particularly under sustained cornering loads or aggressive track use. This SDI Linkage Spring Cup replaces that...13140796- SKU:
- 13140796
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$53.95 -
SDI Linkage Knob - High Speed SDM-2222003
SDI
$29.95Precision suspension tuning demands reliable, ergonomic controls—and plastic OEM adjusters simply don't cut it when you're dialing in high-speed compression on the track. The SDI Linkage Knob...13140797- SKU:
- 13140797
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$29.95 -
On Sale
SDI Accessory Mount - Sleeve - 1.87" UDAMS-S1875
SDI
MSRP: $5.95Now: $4.00Was: $5.95If you're running an SDI accessory mount system, this sleeve is essential protection for your investment. The 1.87" diameter sleeve prevents tube damage from clamping pressure while allowing...05212036- SKU:
- 05212036
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $5.95Now: $4.00Was: $5.95 -
SDI Sway Bar Link - Front SDU-MA-2242001
SDI
$159.99Stock sway bar links are a common failure point under aggressive cornering and track use, compromising your suspension geometry and handling precision. The SDI front sway bar link replaces those weak...04500665- SKU:
- 04500665
- Availability:
- Ships Same Business Day
- Weight:
- 2.37 LBS
$159.99 -
SDI Sway Bar Link - Rear SDU-MA-2242002
SDI
$159.99Stock sway bar links are a weak point in any performance chassis—they flex under cornering loads, compromising your suspension's ability to maintain precise geometry and control body roll. This SDI...04500671- SKU:
- 04500671
- Availability:
- Ships Same Business Day
- Weight:
- 4.32 LBS
$159.99 -
SDI Sway Bar Link - Rear SDU-MA-2242003
SDI
$159.99Stock sway bar links lack the adjustability and durability needed for consistent handling under racing conditions or aggressive driving. This SDI rear sway bar link delivers race-proven strength with...04500672- SKU:
- 04500672
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
$159.99 -
SDI Tie Rods - Maverick UDCPZTR-MAV
SDI
$272.95Stock tie rods flex and wear under aggressive driving, compromising steering precision and suspension geometry—especially critical during hard cornering or racing. The SDI Tie Rods for Maverick...04301159- SKU:
- 04301159
- Availability:
- Ships Same Business Day
- Weight:
- 4.70 LBS
$272.95Qty in Cart: 0Quantity:Price:$272.95Subtotal: -
SDI Tie Rods - +3" UDCPZTR100015E3
SDI
$259.95Precise steering geometry is non-negotiable in high-performance driving, and worn or stock tie rods compromise both handling responsiveness and safety at speed. The SDI +3" Tie Rods deliver...04301165- SKU:
- 04301165
- Availability:
- Ships Same Business Day
- Weight:
- 6.45 LBS
$259.95Qty in Cart: 0Quantity:Price:$259.95Subtotal: -
SDI Tie Rods - RZR 900 UDCPZTR900
SDI
$249.95Stock tie rods are the weak link in high-stress RZR 900 applications—they flex under load and wear prematurely, compromising steering precision and creating safety risks. The SDI Tie Rods replace...04301172- SKU:
- 04301172
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
$249.95Qty in Cart: 0Quantity:Price:$249.95Subtotal: -
SDI Tie Rods UDCTRXTR
SDI
$291.95Stock tie rods introduce play and deflection that compromise steering precision under aggressive driving conditions. The SDI Tie Rods UDCTRXTR replace worn OEM components with heavy-duty...04301173- SKU:
- 04301173
- Availability:
- Ships Same Business Day
- Weight:
- 4.36 LBS
$291.95Qty in Cart: 0Quantity:Price:$291.95Subtotal: -
SDI Swaybar Endlink - Rear - Heavy Duty UDCPZSBLTS
SDI
$169.95Stock rear swaybar endlinks flex and wear under aggressive driving, compromising your vehicle's handling precision and cornering stability. The SDI Heavy Duty Rear Swaybar Endlink replaces that...04500594- SKU:
- 04500594
- Availability:
- Ships Same Business Day
- Weight:
- 2.78 LBS
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
SDI Swaybar Endlink - Heavy Duty UDCPZSWB-YXZ
SDI
$202.95Stock swaybar endlinks flex and wear under aggressive driving, compromising your suspension's ability to control body roll and maintain consistent handling. The SDI Heavy Duty Swaybar Endlink...04500595- SKU:
- 04500595
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
$202.95Qty in Cart: 0Quantity:Price:$202.95Subtotal: -
SDI Radius Rod - Talon R UDCHRRTR
SDI
$569.95Stock radius rods on your Talon R are a common failure point under aggressive driving, especially in off-road or track conditions where suspension loads spike dramatically. The SDI Radius Rod...13020698- SKU:
- 13020698
- Availability:
- Ships Same Business Day
- Weight:
- 28.68 LBS
$569.95Qty in Cart: 0Quantity:Price:$569.95Subtotal: -
SDI Radius Rod - Talon X UDCHRRTX
SDI
$569.95Stock radius rods flex and wear under aggressive driving, compromising suspension geometry and handling precision. The SDI Radius Rod for Talon X replaces OEM components with heavy-duty construction...13020699- SKU:
- 13020699
- Availability:
- Ships Same Business Day
- Weight:
- 13.55 LBS
$569.95Qty in Cart: 0Quantity:Price:$569.95Subtotal: -
SDI Radius Rod - RZR Pro XP UDCPZRR-PXP
SDI
$562.95Stock radius rods on your RZR Pro XP will flex and wear under aggressive terrain and sustained high-speed runs. The SDI Radius Rod replaces those compromised OEM components with heavy-duty...13020700- SKU:
- 13020700
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$562.95Qty in Cart: 0Quantity:Price:$562.95Subtotal: -
SDI Clutch Alignment Tool - Transmission Shaft DTPZCAT-T15
SDI
$69.95Proper clutch alignment is non-negotiable when assembling a high-performance drivetrain—even a slight misalignment can cause premature wear, vibration, and transmission damage. The SDI Clutch...38030224- SKU:
- 38030224
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SDI Free Piston Assembly SDEFFPA-SFF
SDI
$62.95Stock plastic pistons are a known weak point in high-demand applications—they flex under pressure, wear prematurely, and can fail catastrophically when you need reliability most. The SDI Free Piston...04500596- SKU:
- 04500596
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Fork Preload Spacer - 2.5 mm SDEFSP25-25
SDI
$6.95Fine-tuning your suspension geometry shouldn't require a complete fork disassembly. The SDI Fork Preload Spacer delivers precise 2.5 mm preload adjustment on twin-chamber forks with a simple bolt-on...04500606- SKU:
- 04500606
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$6.95Qty in Cart: 0Quantity:Price:$6.95Subtotal: -
SDI DU Piston Bushing Conversion Kit - 46 mm DRPBK-KYB46
SDI
$19.95Stock piston rings wear significantly within the first five hours of use, leading to degraded damping performance and increased friction. The SDI DU Piston Bushing Conversion Kit replaces your wear...04500614- SKU:
- 04500614
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
SDI Fork Service Kit - 49 mm SFSK49
SDI
$83.95Proper fork maintenance is critical to maintaining responsive handling, consistent damping performance, and extending the life of your suspension. The SDI Fork Service Kit for 49 mm forks provides...04500631- SKU:
- 04500631
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$83.95Qty in Cart: 0Quantity:Price:$83.95Subtotal: -
SDI Fork Service Kit - 35 mm WFSK35-SKF
SDI
$99.95Proper fork maintenance is essential to maintaining your suspension's responsiveness, damping characteristics, and longevity. This comprehensive service kit contains every seal, fluid, and component...04500633- SKU:
- 04500633
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
SDI Linkage Arm - Orange SDECLAK16-ORG
SDI
$472.95If you're tired of your bike pitching under acceleration and diving under braking, the SDI Linkage Arm is engineered to eliminate that front-to-back rocking that kills your chassis control. By...13020708- SKU:
- 13020708
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
$472.95Qty in Cart: 0Quantity:Price:$472.95Subtotal: -
SDI Linkage Arm - Blue SDECLAY10-BLU
SDI
$449.95If you're experiencing excessive front-to-back rocking or harsh bottoming during deep suspension stroke, the SDI Linkage Arm directly addresses these issues by stiffening the initial curve of your...13020710- SKU:
- 13020710
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$449.95Qty in Cart: 0Quantity:Price:$449.95Subtotal: -
SDI Lowering Pull Rod - Blue SDECPRKX85L-BLU
SDI
$62.95If you're running a bike that feels unsettled under acceleration or wallows through mid-corner transitions, your suspension geometry is working against you. The SDI Lowering Pull Rod addresses this...13041066- SKU:
- 13041066
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Bladder Cap - Black SDESBC52B-S
SDI
$66.95If you're running a performance suspension setup, shock temperature management and consistent feel across your suspension travel directly impact lap times and ride quality. The SDI Bladder Cap...13140700- SKU:
- 13140700
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$66.95Qty in Cart: 0Quantity:Price:$66.95Subtotal: -
SDI Bladder Cap - Blue SDESBC85BLU
SDI
$62.95If you're running a performance suspension setup, shock thermal management directly impacts your lap times and ride consistency. The SDI Bladder Cap increases shock volume for more linear damping...13140706- SKU:
- 13140706
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Bladder Cap - Red SDESBC85R
SDI
$62.95Shock performance hinges on thermal management and consistent damping characteristics—a bladder cap directly addresses both. By increasing internal volume, this cap promotes a more linear shock...13140708- SKU:
- 13140708
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Bladder Cap - Blue SDESBCAKT16SBLU
SDI
$143.95If you're running a stock floating piston accumulator, you're dealing with unnecessary friction that degrades shock performance over time. The SDI Bladder Cap converts your suspension to a proven...13140713- SKU:
- 13140713
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$143.95 -
SDI Bladder Cap - Orange SDESBCAKT16SORG
SDI
$143.95If you're running a stock OEM floating piston shock, you're dealing with unnecessary friction that compromises both performance and component longevity. The SDI Bladder Cap converts your suspension...13140714- SKU:
- 13140714
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
$143.95Qty in Cart: 0Quantity:Price:$143.95Subtotal: -
SDI Bladder Cap - Orange SDESBCAKT17-ORG
SDI
$143.95If you're running an older shock with a floating piston design, you're leaving performance on the table. The SDI Bladder Cap converts that restrictive OEM setup to a true bladder system, eliminating...13140716- SKU:
- 13140716
- Availability:
- Ships Same Business Day
- Weight:
- 0.64 LBS
$143.95Qty in Cart: 0Quantity:Price:$143.95Subtotal: -
SDI Bladder Cap - Black SDESBCK250B
SDI
$62.95If you're running a performance shock system, a larger reservoir volume is critical for consistent damping performance under sustained track conditions. The SDI Bladder Cap increases your shock's...13140728- SKU:
- 13140728
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Bladder Cap - Blue SDESBCK250BLU
SDI
$59.95Upgrading your shock system with a bladder cap is one of the most effective ways to refine your suspension's performance characteristics. By increasing fluid volume, this cap delivers a more linear...13140729- SKU:
- 13140729
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
SDI Assembly Grease - 4 oz.net wt. SDOAG4OZ
SDI
$10.95When assembling high-performance components, standard lubricants simply won't cut it—SDI Assembly Grease is engineered to withstand extreme pressures and temperatures that would compromise inferior...36070051- SKU:
- 36070051
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
SDI Super Slick Grease - 4 oz.net wt. SDPBG4OZ
SDI
$19.95Fork seal grease is critical to suspension performance—it reduces friction, extends seal life, and prevents premature wear that compromises your bike's handling. SDI Super Slick Grease is formulated...36070053- SKU:
- 36070053
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
SDI Shock Oil - 5 U.S gal. Easy Pack SDPSO-5GAL
SDI
$269.95Modern motorcycle and UTV shocks demand a shock oil that can withstand extreme compression cycles, temperature swings, and the sustained pressures of aggressive riding—stock fluid simply won't cut it...36090160- SKU:
- 36090160
- Availability:
- Ships Same Business Day
- Weight:
- 39.00 LBS
$269.95Qty in Cart: 0Quantity:Price:$269.95Subtotal: -
SDI Linkage Shock Bladder Conversion Kit - Factory Brown SDM-2222006-FB
SDI
$139.95Stock floating piston shocks introduce friction and inconsistency that compromise ride quality and longevity. This SDI linkage shock bladder conversion replaces that design with a proven conventional...13140789- SKU:
- 13140789
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
$139.95Qty in Cart: 0Quantity:Price:$139.95Subtotal: -
SDI Linkage Spring Nut - Black SDM-2222001-B
SDI
$74.95OEM plastic spring nuts are a known weak point in suspension assemblies—they degrade under preload stress and eventually fail, compromising shock performance and alignment stability. The SDI Linkage...13140791- SKU:
- 13140791
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
$74.95Qty in Cart: 0Quantity:Price:$74.95Subtotal: -
SDI DU Piston Bushing Conversion Kit - 50 mm DRPBK-WP5023
SDI
$19.95Stock piston wear bands degrade rapidly under demanding conditions, compromising damping consistency and efficiency within the first five hours of operation. The SDI DU Piston Bushing Conversion Kit...04500664- SKU:
- 04500664
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal:
