Dirt Bike Suspension
Dirt Bike Suspension Parts at JJ Motorsports
Fine-tune your ride with advanced suspension components from JJ Motorsports. From rear suspension upgrades to precision-manufactured forks, these products ensure improved handling and shock absorption. Find complementary off-road dirt bike parts to optimize every ride on the track or trail.
Shop trusted brands like Progressive Suspension for adjustable shocks and Fox for high-performance forks. Explore related categories such as Dirt Bike Braking for stopping power or Dirt Bike Tires and Wheels for complete setups.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Pro Circuit Linkage Arm 2018-2025 Suzuki RM-Z450 SPA18450
PRO CIRCUIT
$316.95Factory linkage arms wear and flex under load, introducing play into your suspension geometry and creating that vague, wallowy mid-corner feel that costs you lap time. The PRO CIRCUIT Linkage Arm SPA18450 is CNC-machined from billet aluminum to eliminate...13020653- SKU:
- 13020653
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- BRONZE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- LINKAGE ARM
$316.95 -
PARTS UNLIMITED Fork Seals - 38 mm ID x 50 mm OD x 8mm T PUP40FORK455043
PARTS UNLIMITED
$11.28Fork seals are the critical barrier between your suspension fluid and external contaminants—once they fail, oil degradation and performance loss accelerate rapidly. These PARTS UNLIMITED replacements restore proper damping characteristics and eliminate...FS018- SKU:
- FS018
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- INSIDE DIAMETER METRIC:
- 38.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 50.00 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 8.00 MM
$11.28 -
PARTS UNLIMITED Fork Seals - 43 mm ID x 54 mm OD x 11 mm T PUP40FORK455056
PARTS UNLIMITED
$12.31Fork seal degradation is one of the most common causes of suspension performance loss and component damage in both street and track applications. These PARTS UNLIMITED fork seals maintain proper oil containment and prevent contamination from entering...FS024- SKU:
- FS024
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- OUTSIDE DIAMETER METRIC:
- 54.00 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 11.00 MM
- INSIDE DIAMETER METRIC:
- 43.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- PAIR
$12.31 -
PARTS UNLIMITED Fork Seals - 43 mm ID x 55 mm OD x 10.5 mm T PUP40FORK455058
PARTS UNLIMITED
$12.31Fork seals are critical to maintaining suspension performance and preventing hydraulic fluid loss that can compromise your bike's handling and braking response. Worn or leaking seals force you into costly suspension rebuilds and unreliable ride quality...FS025- SKU:
- FS025
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- INSIDE DIAMETER METRIC:
- 43.00 MM
- PRODUCT NAME:
- FORK SEAL
- UNITS:
- PAIR
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 55.00 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.50 MM
$12.31 -
PARTS UNLIMITED Fork Seals - 31 mm ID x 43 mm OD x 12.5 mm T PUP40FORK455016
PARTS UNLIMITED
$11.28Worn or leaking fork seals compromise suspension performance and accelerate damage to your fork tubes—a costly repair if ignored. These OEM-specification replacement seals restore proper damping function and seal integrity, keeping your suspension...FS030- SKU:
- FS030
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 12.50 MM
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 31.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- OUTSIDE DIAMETER METRIC:
- 43.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$11.28 -
PARTS UNLIMITED Fork Seals - 37 mm ID x 48 mm OD x 10.5 mm T PUP40FORK455038
PARTS UNLIMITED
$12.31Worn fork seals compromise suspension performance and accelerate damage to expensive fork internals. PARTS UNLIMITED Fork Seals deliver OEM-equivalent reliability, keeping your suspension pressurized and your oils contained where they belong. Whether...FS031- SKU:
- FS031
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- THICKNESS METRIC:
- 10.50 MM
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 37.00 MM
- OUTSIDE DIAMETER METRIC:
- 48.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- FORK SEAL
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
$12.31 -
PARTS UNLIMITED Fork Seals - 41 mm ID x 53 mm OD x 10.5 mm T PUP40FORK455053
PARTS UNLIMITED
$12.31Worn fork seals compromise your suspension's performance and longevity, allowing hydraulic fluid to leak and contaminants to enter the damping circuit. PARTS UNLIMITED Fork Seals deliver OEM-specification quality and durability at a fraction of the cost...FS032- SKU:
- FS032
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 10.50 MM
- INSIDE DIAMETER METRIC:
- 41.00 MM
- OUTSIDE DIAMETER METRIC:
- 53.00 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- PAIR
$12.31 -
PARTS UNLIMITED Fork Seals - 26 mm ID x 37 mm OD x 10.5 mm T PUP40FORK455004
PARTS UNLIMITED
$10.25Fork seals are critical wear items that directly impact suspension performance and longevity. Worn or leaking seals allow hydraulic fluid to escape, compromising damping characteristics and risking internal fork damage. PARTS UNLIMITED Fork Seals deliver...FS037- SKU:
- FS037
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 26.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 37.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.50 MM
$10.25 -
PARTS UNLIMITED Fork Seals - 46 mm ID x 58 mm OD x 9.5/11 mm T PUP40FORK455086
PARTS UNLIMITED
$33.94Fork seals are critical wear items that directly impact your suspension's performance and longevity. Degraded or leaking seals allow hydraulic fluid to escape, compromising damping characteristics and exposing internal components to contamination. PARTS...FS044- SKU:
- FS044
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- NOK ANTI-STICTION
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 46.00 MM
- OUTSIDE DIAMETER METRIC:
- 58.00 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 9.50 MM/11.00 MM
$33.94 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 58.5 mm OD x 4.7/11.5 mm T PUP40FORK455131
PARTS UNLIMITED
$61.75Worn fork seals compromise suspension performance and invite contaminants into your fork tubes—leading to accelerated wear, oil leakage, and unpredictable handling. These PARTS UNLIMITED replacement seals restore OEM-spec performance and durability,...04070137- SKU:
- 04070137
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- FORK SEAL
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 48.00 MM
- OUTSIDE DIAMETER METRIC:
- 58.50 MM
- THICKNESS METRIC:
- 4.70 MM/11.50 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$61.75 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 58.1 mm OD x 8.5/10.5 mm T PUP40FORK455139
PARTS UNLIMITED
$34.97Fork seals are critical wear items that directly impact suspension performance, handling precision, and fork longevity. Degraded or leaking seals compromise damping oil retention, leading to poor ride quality, reduced braking stability, and accelerated...04070138- SKU:
- 04070138
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- NOK ANTI-STICTION
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 8.50 MM/10.50 MM
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 48.00 MM
- OUTSIDE DIAMETER METRIC:
- 58.10 MM
$34.97 -
PARTS UNLIMITED Fork Seals - 32 mm ID x 42 mm OD x 8/9 mm T PUP40FORK455066
PARTS UNLIMITED
$10.25Fork seals are critical wear items that directly impact your suspension's performance and longevity. Worn or leaking seals allow hydraulic fluid to escape, compromising damping characteristics and potentially causing costly internal damage to your fork...04070139- SKU:
- 04070139
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- INSIDE DIAMETER METRIC:
- 32.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 42.00 MM
- THICKNESS METRIC:
- 8.00 MM/9.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
$10.25 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 57.9 mm OD x 11.5 mm T PUP40FORK455141
PARTS UNLIMITED
$63.81Worn fork seals compromise suspension performance and invite contamination into your fork tubes—leading to poor damping, noise, and costly internal damage. PARTS UNLIMITED Fork Seals deliver OEM-specification protection and precise hydraulic sealing,...04070140- SKU:
- 04070140
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 11.50 MM
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 48.00 MM
- MATERIAL:
- NOK ANTI-STICTION
- OUTSIDE DIAMETER METRIC:
- 57.90 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$63.81 -
PARTS UNLIMITED Fork Seals - 27 mm ID x 51.5 mm OD x 30 mm T PUP40FORK455142
PARTS UNLIMITED
$41.15Worn fork seals compromise suspension performance and invite hydraulic fluid leakage that degrades damping consistency and shortens component life. These OEM-specification replacement seals restore your fork's original sealing integrity, ensuring...04070269- SKU:
- 04070269
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- INSIDE DIAMETER METRIC:
- 27.00 MM
- OUTSIDE DIAMETER METRIC:
- 51.50 MM
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 30.00 MM
- UNITS:
- PAIR
$41.15 -
PARTS UNLIMITED Fork Seals - 43 mm ID x 53.4 mm OD x 5.8/11.8 mm T PUP40FORK455125
PARTS UNLIMITED
$51.45Fork seals are critical wear items that directly impact your suspension's performance and longevity. Degraded seals allow hydraulic fluid to escape and contaminants to enter, compromising damping characteristics and risking fork damage. These...04070270- SKU:
- 04070270
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- INSIDE DIAMETER METRIC:
- 43.00 MM
- UNITS:
- PAIR
- PRODUCT NAME:
- FORK SEAL
- MATERIAL:
- RUBBER
- OUTSIDE DIAMETER METRIC:
- 53.40 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 5.80 MM/11.80 MM
$51.45 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 58.4 mm OD x 5.8/11.8 mm T PUP40FORK455126
PARTS UNLIMITED
$51.45Worn fork seals compromise suspension performance and invite hydraulic fluid leakage that accelerates component degradation. These PARTS UNLIMITED replacement seals restore the pressure integrity of your fork assembly, ensuring consistent damping control...04070271- SKU:
- 04070271
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- PRODUCT NAME:
- FORK SEAL
- OUTSIDE DIAMETER METRIC:
- 58.40 MM
- THICKNESS METRIC:
- 5.80 MM/11.80 MM
- INSIDE DIAMETER METRIC:
- 48.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
$51.45 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 58.4 mm OD x 5.8/13.3 mm T PUP40FORK455140
PARTS UNLIMITED
$55.57Fork seals are critical wear items that directly impact suspension performance, handling precision, and fork longevity. Worn or leaking seals allow hydraulic fluid to escape, compromising damping characteristics and exposing internal components to...04070272- SKU:
- 04070272
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- OUTSIDE DIAMETER METRIC:
- 58.40 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 48.00 MM
- THICKNESS METRIC:
- 5.80 MM/13.30 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$55.57 -
PARTS UNLIMITED Fork Seals - 45 mm ID x 58.4 mm OD x 4.6/14 mm T PUP40FORK455179
PARTS UNLIMITED
$48.36Fork seals are critical wear items that deteriorate with every riding season, allowing oil to migrate past the seal and compromising your suspension's damping performance and handling precision. This PARTS UNLIMITED replacement set restores...04070291- SKU:
- 04070291
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- INSIDE DIAMETER METRIC:
- 45.00 MM
- MATERIAL:
- RUBBER
- OUTSIDE DIAMETER METRIC:
- 58.40 MM
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 4.60 MM/14.00 MM
- UNITS:
- PAIR
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$48.36 -
MOOSE RACING Fork Seal Kit - 48 mm 56-146
MOOSE RACING
$39.95Fork seals are critical wear items that directly impact your suspension's performance and longevity. Stock OEM seals degrade quickly under racing conditions, leading to fluid leakage, loss of damping control, and costly fork rebuilds. The MOOSE RACING...04070102- SKU:
- 04070102
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 9.50 MM
- PRODUCT NAME:
- FORK SEAL KIT
- INSIDE DIAMETER METRIC:
- 48.00 MM
- OUTSIDE DIAMETER METRIC:
- 58.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$39.95 -
MOOSE RACING Shock Bearing Kit - Front Upper/Lower | Rear Upper/Lower 29-1003
MOOSE RACING
$29.95Worn shock bearings compromise your suspension's responsiveness and can lead to premature component failure. The MOOSE RACING Shock Bearing Kit 29-1003 restores your shocks to factory specifications with OEM-quality components at a fraction of OEM...A291003- SKU:
- A291003
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MOUNTING POSITION:
- FRONT - LOWER
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- FRONT - UPPER
- TYPE:
- SHOCK
- MOUNTING POSITION:
- REAR - LOWER
- MOUNTING POSITION:
- REAR - UPPER
- RIDING STYLE:
- ATV
$29.95
