Dirt Bike Rear Suspension
Dirt Bike Rear Suspension Parts: Lowering Rods, Swingarm Bearings & Shock Springs at JJ Motorsports
Upgrade your dirt bike's rear suspension with premium parts from JJ Motorsports, designed for better damping and durability in motocross, enduro, and trail riding. These components improve handling and reduce wear for reliable performance.
Shop Moose Offroad, Moose Racing, and Factory Connection rear suspension parts for durable, easy-to-install upgrades. Explore related categories such as dirt bike suspension for front forks and shocks, or dirt bike frame and body for guards and panels to complete your build and achieve balanced, responsive ride quality across all conditions, from high-speed jumps to technical singletrack.
Top Dirt Bike Rear Suspension Parts
- Moose Offroad Lowering Pull Rod 0419-0022 – Adjustable aluminum rod for lowering rear suspension; fits Honda CRF and Yamaha YZ for improved ergonomics.
- Moose Racing Swingarm Bearing Kit 28-1231 – Complete sealed bearing kit for swingarms; smooth rotation on Kawasaki KX models.
- Factory Connection Shock Spring ANB-0034 – Progressive rear shock spring for Factory Connection shocks; tunes damping for KTM SX.
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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FACTORY CONNECTION Shock Seal FCS-14U
FACTORY CONNECTION
$31.00Stock shock seals degrade under thermal cycling and constant compression, leading to fluid weeping, reduced damping performance, and costly seal replacements. The FACTORY CONNECTION FCS-14U upgrade uses a high-compliance rubber compound engineered to...13140208- SKU:
- 13140208
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- SEAL
- TYPE:
- SHOCK SHAFT
- UNITS:
- EACH
- MATERIAL:
- RUBBER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
$31.00 -
RACE TECH Shock Oil Seal - 14 mm x 30 mm - KYB SKOS 14
RACE TECH
$9.99Worn shock seals lead to oil leakage, compromised damping performance, and accelerated suspension wear—exactly what you can't afford during competition or spirited driving. The RACE TECH SKOS 14 delivers the precision fit and material durability needed...SKOS14- SKU:
- SKOS14
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SHOCK
- UNITS:
- EACH
- PRODUCT NAME:
- SHAFT SEAL
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- INSIDE DIAMETER IMPERIAL:
- 0.55'
- INSIDE DIAMETER METRIC:
- 14.00 MM
- MODEL:
- FOR KYB
- OUTSIDE DIAMETER IMPERIAL:
- 1.18'
- RIDING STYLE:
- ATV
$9.99 -
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 358 lbs/in SRSP 622864
RACE TECH
$149.99If you're serious about suspension tuning, spring rate precision directly impacts your lap times and handling consistency. The RACE TECH Front Spring delivers the stiffness you need without excess weight, giving you the responsiveness that separates...SRSP622864- SKU:
- SRSP622864
- Availability:
- Ships Same Business Day
- Weight:
- 5.75 LBS
- COLOR/FINISH:
- BLUE
- LINEAR SPRING RATE IMPERIAL:
- 358.00 LB/IN
- LINEAR SPRING RATE METRIC:
- 6.40 KG/MM
- MODEL:
- SPORT SERIES
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SHOCK SPRING
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 10.63'
$149.99 -
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 258 lbs/in SRSP 672746
RACE TECH
$149.99Front-end geometry and ride quality hinge on spring precision—and this is where the RACE TECH Sport Series delivers. A 258 lbs/in spring rate gives you the stiffness needed for consistent cornering without sacrificing predictable load response, making it...SRSP672746- SKU:
- SRSP672746
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- COLOR/FINISH:
- BLUE
- MODEL:
- SPORT SERIES
- RIDING STYLE:
- OFF-ROAD
- LINEAR SPRING RATE IMPERIAL:
- 258.00 LB/IN
- LINEAR SPRING RATE METRIC:
- 4.60 KG/MM
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SHOCK SPRING
- LENGTH IMPERIAL:
- 10.51'
- UNITS:
- PAIR
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 269 lbs/in SRSP 672748
RACE TECH
$149.99A front spring is fundamental to your suspension's ability to handle cornering loads, brake dive, and sustained track sessions without degradation. The RACE TECH Sport Series delivers precision-engineered performance with a 269 lbs/in rate that balances...SRSP672748- SKU:
- SRSP672748
- Availability:
- Ships Same Business Day
- Weight:
- 3.88 LBS
- MOUNTING POSITION:
- FRONT
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 10.51'
- LINEAR SPRING RATE IMPERIAL:
- 269.00 LB/IN
- LINEAR SPRING RATE METRIC:
- 4.80 KG/MM
- MODEL:
- SPORT SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- PRODUCT NAME:
- SHOCK SPRING
$149.99 -
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 280 lbs/in SRSP 672750
RACE TECH
$149.99Front-end geometry directly impacts lap times and driver confidence through corners. The RACE TECH Sport Series Spring delivers the stiffness your chassis demands while maintaining the precision tolerances required for repeatable performance. At 280...SRSP672750- SKU:
- SRSP672750
- Availability:
- Ships Same Business Day
- Weight:
- 4.19 LBS
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 10.51'
- LINEAR SPRING RATE IMPERIAL:
- 280.00 LB/IN
- PRODUCT NAME:
- SHOCK SPRING
- UNITS:
- PAIR
- LINEAR SPRING RATE METRIC:
- 5.00 KG/MM
- MODEL:
- SPORT SERIES
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 290 lbs/in SRSP 672752
RACE TECH
$149.99If you're building a precision handling platform, your suspension geometry is only as good as your springs. The RACE TECH Front Spring delivers the consistent, predictable spring rate your setup demands—whether you're dialing in a track car or...SRSP672752- SKU:
- SRSP672752
- Availability:
- Ships Same Business Day
- Weight:
- 4.63 LBS
- PRODUCT NAME:
- SHOCK SPRING
- LINEAR SPRING RATE IMPERIAL:
- 290.00 LB/IN
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 10.51'
- LINEAR SPRING RATE METRIC:
- 5.20 KG/MM
- MODEL:
- SPORT SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- MOUNTING POSITION:
- FRONT
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Rear Spring - Blue - Sport Series - Spring Rate 300 lbs/in SRSP 672754
RACE TECH
$149.99If you're building a race-ready suspension setup, spring rate consistency directly impacts your lap times and handling predictability. The RACE TECH Rear Spring delivers the precision engineering and material quality required to maintain performance...SRSP672754- SKU:
- SRSP672754
- Availability:
- Ships Same Business Day
- Weight:
- 4.38 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SHOCK SPRING
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 10.51'
- LINEAR SPRING RATE IMPERIAL:
- 300.00 LB/IN
- UNITS:
- PAIR
- LINEAR SPRING RATE METRIC:
- 5.40 KG/MM
- MODEL:
- SPORT SERIES
- RIDING STYLE:
- OFF-ROAD
$149.99 -
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 319.19 lbs/in SRSP 672757
RACE TECH
$149.99A properly tuned front spring is fundamental to consistent lap times and predictable handling behavior. The RACE TECH Sport Series delivers a 319.19 lbs/in spring rate with precision engineering that eliminates guesswork from your suspension tuning...SRSP672757- SKU:
- SRSP672757
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- LINEAR SPRING RATE METRIC:
- 5.70 KG/MM
- PRODUCT NAME:
- SHOCK SPRING
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 10.51'
- MODEL:
- SPORT SERIES
- RIDING STYLE:
- OFF-ROAD
- LINEAR SPRING RATE IMPERIAL:
- 319.19 LB/IN
- MOUNTING POSITION:
- REAR
$149.99 -
RACE TECH Gold Valve Shock Kit - 36 mm SMGV 3609
RACE TECH
$199.99If you're running a 36mm shock and need suspension that actually responds to your inputs rather than fighting you, this valving kit is the upgrade that separates competitive setups from mediocre ones. The Gold Valve design gives you real control over...SMGV3601- SKU:
- SMGV3601
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- OUTSIDE DIAMETER METRIC:
- 36.00 MM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COLOR/FINISH:
- GOLD
- MODEL:
- GOLD VALVE
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- ATV
- TYPE:
- SHOCK
$199.99 -
RACE TECH Gold Valve Shock Kit - 44 mm SMGV441203
RACE TECH
$199.99Suspension performance directly impacts your control, traction, and confidence on any terrain. If you're running stock valving, you're leaving adjustability and responsiveness on the table—especially under demanding conditions like supercross or with a...SMGV4401- SKU:
- SMGV4401
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COLOR/FINISH:
- GOLD
- MODEL:
- GOLD VALVE
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- VALVE KIT
- TYPE:
- SHOCK
$199.99 -
RACE TECH Shock Shaft Bushing - 12.5 mm ID x 8 mm L SMSB 12508
RACE TECH
$12.99Shock shaft bushings are critical wear items that directly impact damping consistency and responsiveness. A worn or degraded bushing introduces play into your suspension geometry, compromising handling precision and increasing fade under sustained track...SMSB12508- SKU:
- SMSB12508
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DAMPING ROD
- INSIDE DIAMETER IMPERIAL:
- 0.49'
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- LENGTH METRIC:
- 8.00 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 0.32'
$12.99 -
RACE TECH Shock Shaft Bushing - 14 mm ID x 12 mm L SMSB 1412
RACE TECH
$9.99Shock shaft bushings wear under continuous load cycles, causing seal leakage and unpredictable damping characteristics that compromise both handling and safety. The RACE TECH SMSB 1412 restores precision fit and low-friction performance, allowing your...SMSB1412- SKU:
- SMSB1412
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- LENGTH METRIC:
- 12.00 MM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 0.55'
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- SHOCK SHAFT
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 0.47'
$9.99 -
RACE TECH Shock Shaft Bushing - 14 mm ID x 15 mm L SMSB 1415
RACE TECH
$9.99Shock shaft bushings are critical wear items in high-performance suspension systems—when they degrade, you lose damping consistency and precise handling feedback. This RACE TECH rebuild bushing restores seal head assembly integrity without the cost of a...SMSB1415- SKU:
- SMSB1415
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.55'
- LENGTH IMPERIAL:
- 0.59'
- LENGTH METRIC:
- 15.00 MM
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- SHOCK SHAFT
- RIDING STYLE:
- UTV
$9.99 -
RACE TECH Shock Shaft Bushing - 16 mm ID x 12 mm L SMSB 1612
RACE TECH
$9.99Shock shaft bushings are critical wear items that directly impact suspension responsiveness and seal longevity. When PTFE coating degrades or bushing clearance increases, you'll notice delayed shock response and potential fluid weepage. The RACE TECH...SMSB1612- SKU:
- SMSB1612
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- LENGTH METRIC:
- 12.00 MM
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- INSIDE DIAMETER IMPERIAL:
- 0.63'
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SHOCK SHAFT
$9.99 -
RACE TECH Shock Shaft Bushing - 16 mm ID x 15 mm L SMSB 1615
RACE TECH
$9.99Shock shaft bushings are critical wear items that directly impact your suspension's responsiveness and consistency across multiple heat cycles. The RACE TECH SMSB 1615 combines cost-effective replacement economics with performance-grade materials, making...SMSB1615- SKU:
- SMSB1615
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- SHOCK SHAFT
- INSIDE DIAMETER IMPERIAL:
- 0.63'
- LENGTH IMPERIAL:
- 0.59'
- LENGTH METRIC:
- 15.00 MM
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$9.99 -
RACE TECH Gold Valve Shock Kit - 50 mm SMGV 5045
RACE TECH
$199.99Stock shock valving limits your suspension's potential across varying terrain and riding conditions. The RACE TECH Gold Valve Shock Kit delivers precise control and tunability that transforms how your bike handles—from technical trail sections to...13140279- SKU:
- 13140279
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- VALVE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- OUTSIDE DIAMETER METRIC:
- 50.00 MM
- TYPE:
- SHOCK
- MODEL:
- GOLD VALVE
$199.99Qty in Cart: 0Quantity:Price:$199.99Subtotal: -
RACE TECH High-Volume Shock Reservoir Cap - 52 mm - KYB SMRC 52001
RACE TECH
$79.99Shock fade is the silent performance killer on the track—as your dampers heat up, nitrogen pressure drops and your suspension loses responsiveness when you need it most. The RACE TECH High-Volume Shock Reservoir Cap solves this by increasing nitrogen...13140244- SKU:
- 13140244
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- BLUE
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SHOCK RESERVOIR
- INSIDE DIAMETER METRIC:
- 52.00 MM
- PRODUCT NAME:
- CAP
$79.99 -
RACE TECH High-Volume Shock Reservoir Cap - 54 mm - KYB SMRC 54001
RACE TECH
$64.99Shock fade under sustained track use ruins lap times and compromises safety. This billet aluminum reservoir cap increases nitrogen volume capacity, allowing your KYB shocks to maintain consistent damping through extended sessions without pressure loss...13140251- SKU:
- 13140251
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER METRIC:
- 54.00 MM
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- ATV
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- CAP
- TYPE:
- SHOCK RESERVOIR
$64.99Qty in Cart: 0Quantity:Price:$64.99Subtotal: -
RACE TECH High-Volume Shock Reservoir Cap - 64 mm - KYB SMRC 64001
RACE TECH
$79.99Shock fade under sustained racing conditions is a performance killer—and this RACE TECH reservoir cap eliminates it. By increasing nitrogen volume capacity, you'll maintain consistent damping rates lap after lap, even during extended track sessions. The...13140253- SKU:
- 13140253
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- CAP
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER METRIC:
- 64.00 MM
- MOUNTING POSITION:
- REAR
- TYPE:
- SHOCK RESERVOIR
$79.99
