Dirt Bike Front Suspension
Dirt Bike Front Suspension Parts: Fork Springs, Guards & Launch Devices for Yamaha at JJ Motorsports
Enhance your dirt bike's front suspension with premium parts from JJ Motorsports, designed for smoother damping and protection in motocross, enduro, and trail riding. These components improve handling and reduce wear for reliable performance.
Shop Works Connection, Moose Racing, and Polisport front suspension parts for durable, easy-to-install upgrades. Explore related categories such as dirt bike suspension for shocks and bushings, or dirt bike for full builds to complete your setup and achieve balanced, responsive handling across all conditions, from high-speed jumps to technical singletrack.
Top Dirt Bike Front Suspension Parts
- Works Connection Pro Launch Start Device Yamaha 12-416 – Adjustable launch device for Yamaha YZ; reduces fork compression for better starts.
- Moose Racing Fork Springs 31 mm 2.4 N/mm 0405-1120 – Progressive fork springs for 31mm tubes; improves damping on Kawasaki KX models.
- Polisport Fork Guard Cover Black 8398100002 – Black plastic fork guards; protects stanchions from rocks on Honda CRF.
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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MOOSE RACING Fork Bushing Kit - 48.80 mm 38-6128
MOOSE RACING
$51.95Fork bushings are critical wear items that directly impact your suspension's responsiveness, damping consistency, and overall ride quality. Over time, stock bushings deteriorate under the repetitive stress of cornering and braking, leading to slop,...04500345- SKU:
- 04500345
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
- PRODUCT NAME:
- BUSHING KIT
- INNER BUSHING INSIDE DIAMETER METRIC:
- 48.10 MM
- INNER BUSHING WIDTH IMPERIAL:
- 0.47'
- MATERIAL:
- PTFE
- INNER BUSHING OUTSIDE DIAMETER IMPERIAL:
- 2.05'
$51.95 -
MOOSE RACING Fork Bushing Kit - 52.00 mm 38-6074
MOOSE RACING
$71.95Fork bushings are critical wear items that directly impact your suspension's responsiveness and longevity. When bushings degrade, you lose precise damping control and risk accelerated seal wear—ultimately compromising both handling and safety. The MOOSE...04500209- SKU:
- 04500209
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- INNER BUSHING WIDTH IMPERIAL:
- 0.79'
- MATERIAL:
- PTFE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- INNER BUSHING OUTSIDE DIAMETER IMPERIAL:
- 1.92'
- INNER BUSHING INSIDE DIAMETER METRIC:
- 46.80 MM
- PRODUCT NAME:
- BUSHING KIT
- UNITS:
- KIT
$71.95Qty in Cart: 0Quantity:Price:$71.95Subtotal: -
WORKS CONNECTION Pro Launch Start Device 12-602
WORKS CONNECTION
$148.95Consistent launch performance separates competitive riders from the rest of the field. The WORKS CONNECTION Pro Launch Start Device eliminates the inconsistency of traditional spring-loaded designs through its spring-less mechanism, giving you reliable...04500318- SKU:
- 04500318
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MODEL:
- FOR KTM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
- MOUNTING POSITION:
- FRONT
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- RED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- LAUNCH CONTROL
- RIDING STYLE:
- STREET
$148.95Qty in Cart: 0Quantity:Price:$148.95Subtotal: -
PARTS UNLIMITED Fork Seals - 27 mm ID x 39 mm OD x 10.5 mm T PUP40FORK455080
PARTS UNLIMITED
$11.17Leaking fork seals compromise suspension performance and can lead to costly damage to your forks if left unaddressed. PARTS UNLIMITED Fork Seals deliver OEM-specification protection at a fraction of dealership pricing, restoring your suspension's ability...FS003- SKU:
- FS003
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 27.00 MM
- OUTSIDE DIAMETER METRIC:
- 39.00 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.50 MM
$11.17 -
PARTS UNLIMITED Fork Seals - 33 mm ID x 46 mm OD x 10.5 mm T PUP40FORK455025
PARTS UNLIMITED
$10.15Worn or leaking fork seals compromise your suspension's damping performance and expose internal components to contamination, leading to accelerated wear and inconsistent handling. PARTS UNLIMITED Fork Seals deliver OEM-specification reliability with a...FS007- SKU:
- FS007
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- INSIDE DIAMETER METRIC:
- 33.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 10.50 MM
- UNITS:
- PAIR
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- OUTSIDE DIAMETER METRIC:
- 46.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$10.15 -
PARTS UNLIMITED Fork Seals - 27 mm ID x 37 mm OD x 7.5 mm T PUP40FORK455005
PARTS UNLIMITED
$9.13Fork seals are a critical maintenance item that directly impact your suspension's performance and longevity. Worn or leaking seals allow hydraulic fluid to escape, reducing damping effectiveness and risking damage to your fork internals. These...FS002- SKU:
- FS002
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- OUTSIDE DIAMETER METRIC:
- 37.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- INSIDE DIAMETER METRIC:
- 27.00 MM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- FORK SEAL
- THICKNESS METRIC:
- 7.50 MM
- UNITS:
- PAIR
$9.13 -
PARTS UNLIMITED Fork Seals - 35 mm ID x 47 mm OD x 10 mm T PUP40FORK455029
PARTS UNLIMITED
$11.17Fork seals are critical wear items that directly impact your suspension's performance and longevity. Worn or leaking seals compromise damping consistency, increase friction, and can allow contamination into your fork tubes—ultimately costing you speed...FS010- SKU:
- FS010
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- INSIDE DIAMETER METRIC:
- 35.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- RUBBER
- OUTSIDE DIAMETER METRIC:
- 47.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 10.00 MM
- UNITS:
- PAIR
$11.17 -
PARTS UNLIMITED Fork Seals - 40 mm ID x 52 mm OD x 8/9.5 mm T PUP40FORK455050
PARTS UNLIMITED
$12.19Worn fork seals compromise suspension performance and invite hydraulic fluid leakage that accelerates component wear. These PARTS UNLIMITED replacement seals restore proper damping function and maintain fork oil retention, critical for consistent...FS048- SKU:
- FS048
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- NOK ANTI-STICTION
- OUTSIDE DIAMETER METRIC:
- 52.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 10.00 MM/10.50 MM
- INSIDE DIAMETER METRIC:
- 40.00 MM
$12.19 -
MOOSE RACING Steering Stem Bearing Kit 22-1010
MOOSE RACING
$66.95Your bike's steering geometry demands precision, and OEM ball bearings simply can't deliver the longevity or smooth operation that serious riders require. The MOOSE RACING Steering Stem Bearing Kit upgrades you to tapered roller bearings—the gold...04100026- SKU:
- 04100026
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- MODEL:
- TAPERED ROLLER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- STEERING STEM
$66.95 -
MOOSE RACING Steering Stem Bearing Kit 22-1018
MOOSE RACING
$58.95A worn steering stem bearing setup introduces play and vagueness into your bike's front end—exactly what you don't want when precision handling matters. The MOOSE RACING Steering Stem Bearing Kit 22-1018 replaces OEM ball-type bearings with tapered...04100028- SKU:
- 04100028
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- MODEL:
- TAPERED ROLLER
- TYPE:
- STEERING STEM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$58.95 -
MOOSE RACING Steering Stem Bearing Kit 22-1021
MOOSE RACING
$48.95A worn steering stem bearing kit compromises handling precision and increases maintenance headaches. The MOOSE RACING 22-1021 upgrades your bike from inferior ball-type bearings to tapered roller bearings, delivering smoother steering response, reduced...04100029- SKU:
- 04100029
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- MODEL:
- TAPERED ROLLER
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STEERING STEM
- UNITS:
- KIT
$48.95 -
MOOSE RACING Fork Bushing Kit - 52.00 mm 38-6081
MOOSE RACING
$54.95Fork bushings wear faster than almost any other suspension component, and worn bushings introduce play that kills precision handling and introduces unwanted friction. The MOOSE RACING Fork Bushing Kit replaces all four critical bushing surfaces with...04500212- SKU:
- 04500212
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- INNER BUSHING OUTSIDE DIAMETER IMPERIAL:
- 1.92'
- INNER BUSHING WIDTH IMPERIAL:
- 0.79'
- MATERIAL:
- PTFE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
- INNER BUSHING INSIDE DIAMETER METRIC:
- 46.80 MM
- PRODUCT NAME:
- BUSHING KIT
$54.95 -
WORKS CONNECTION Air Fork EZ Fill 26-362
WORKS CONNECTION
$140.95Air fork pressure adjustments shouldn't require tools, hoses, or guesswork—the WORKS CONNECTION EZ Fill gets you dialed in seconds with nothing more than a pump. Whether you're fine-tuning suspension for track conditions or swapping between riders, this...04040299- SKU:
- 04040299
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- PRE-LOAD ADJUSTER
- MODEL:
- EZ FILL
- TYPE:
- FORK
$140.95Qty in Cart: 0Quantity:Price:$140.95Subtotal: -
MOOSE RACING Fork Seal Kit - 39 mm 56-125
MOOSE RACING
$39.95Fork seals are critical wear items that directly impact your suspension's performance and longevity. A degraded seal allows hydraulic fluid to escape, leading to poor damping, increased friction, and expensive fork damage. The MOOSE RACING 39 mm Fork...04070316- SKU:
- 04070316
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 11.00 MM
- UNITS:
- KIT
- PRODUCT NAME:
- FORK SEAL KIT
- INSIDE DIAMETER METRIC:
- 39.00 MM
- OUTSIDE DIAMETER METRIC:
- 52.00 MM
$39.95 -
MOOSE RACING BEARING STEERING STEM GAS 22-1056
MOOSE RACING
$55.95OEM ball-type steering bearings wear quickly and require frequent maintenance, especially under aggressive riding conditions. The Moose Racing 22-1056 tapered roller bearing set replaces them with a design that reduces play, cuts maintenance intervals,...04100165- SKU:
- 04100165
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- UNITS:
- KIT
- TYPE:
- TAPERED ROLLER
- APPLICATION:
- STEERING STEM
- PRODUCT NAME:
- BEARING
$55.95 -
PARTS UNLIMITED Fork Seals - 41.7 mm ID x 55 mm OD x 8/10.5 mm T PUP40FORK455067
PARTS UNLIMITED
$11.17Fork seals are critical wear items that directly impact suspension performance and safety. Degraded seals allow hydraulic fluid to escape, resulting in poor damping, reduced ride quality, and potential suspension damage. These PARTS UNLIMITED fork seals...04070027- SKU:
- 04070027
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- OUTSIDE DIAMETER METRIC:
- 55.00 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 8.00 MM/10.50 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- INSIDE DIAMETER METRIC:
- 41.70 MM
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
$11.17 -
PARTS UNLIMITED Fork Seals - 32 mm ID x 44 mm OD x 11 mm T PUP40FORK455074
PARTS UNLIMITED
$13.21Fork seals are critical wear items that directly impact your suspension's performance and longevity. Worn or leaking seals allow hydraulic fluid to escape, reducing damping performance and exposing internal components to contamination and corrosion...04070266- SKU:
- 04070266
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 11.00 MM
- INSIDE DIAMETER METRIC:
- 32.00 MM
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
$13.21Qty in Cart: 0Quantity:Price:$13.21Subtotal: -
PARTS UNLIMITED Fork Seals - 37 mm ID x 49 mm OD x 8 mm T PUP40FORK455040
PARTS UNLIMITED
$11.17Fork 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 action, increasing friction, and risking fork tube corrosion. These PARTS...FS016- SKU:
- FS016
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- THICKNESS METRIC:
- 8.00 MM
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 49.00 MM
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 37.00 MM
- RIDING STYLE:
- STREET
$11.17 -
MOOSE RACING Fork Seal Kit - 50 mm 56-148
MOOSE RACING
$39.95Fork seals are critical wear items that directly impact suspension performance and handling precision. OEM seals degrade quickly under racing conditions, leading to oil leakage, loss of damping control, and costly fork rebuilds. The MOOSE RACING Fork...04070305- SKU:
- 04070305
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- INSIDE DIAMETER METRIC:
- 50.00 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.50 MM
- UNITS:
- KIT
- OUTSIDE DIAMETER METRIC:
- 60.00 MM
- PRODUCT NAME:
- FORK SEAL KIT
- RIDING STYLE:
- OFF-ROAD
$39.95 -
MOOSE RACING Fork Seal Kit - 46 mm 56-150
MOOSE RACING
$39.95Fork seal degradation directly impacts suspension performance and introduces contamination into your fork oil—a problem that compounds quickly on the track or trail. The MOOSE RACING Fork Seal Kit replaces worn seals with a patented compound that reduces...04070307- SKU:
- 04070307
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.00 MM
- INSIDE DIAMETER METRIC:
- 46.00 MM
- OUTSIDE DIAMETER METRIC:
- 58.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- FORK SEAL KIT
$39.95
