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
-
WORKS CONNECTION Steering Stem Nut - Black - Yamaha 24-370
WORKS CONNECTION
$37.95If you're serious about track reliability, your steering stem nut deserves the same attention as every other critical fastener on your bike. The WORKS CONNECTION steering stem nut replaces a weak point in your front-end assembly with precision-engineered...04100253- SKU:
- 04100253
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- STEM NUT
- PRODUCT NAME:
- NUT
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 6061-T6 ALUMINUM
$37.95 -
PARTS UNLIMITED Fork Seals - 31 mm ID x 43 mm OD x 10 mm T PUP40FORK455015
PARTS UNLIMITED
$9.95Fork seals are critical wear items that directly impact suspension performance and safety. Deteriorated or leaking seals compromise damping efficiency, increase internal friction, and allow contamination into your fork legs—leading to premature wear on...04070230- SKU:
- 04070230
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 31.00 MM
- OUTSIDE DIAMETER METRIC:
- 43.00 MM
- PRODUCT NAME:
- FORK SEAL
- MATERIAL:
- NOK ANTI-STICTION
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 10.00 MM
- UNITS:
- PAIR
$9.95 -
MOOSE RACING Steering Stem Bearing Kit 22-1019
MOOSE RACING
$56.95Factory ball-type steering stem bearings wear quickly and demand frequent maintenance—tapered roller bearings eliminate that problem. This MOOSE RACING kit delivers a direct upgrade that reduces play, cuts maintenance intervals, and extends the life of...04100164- SKU:
- 04100164
- Availability:
- Ships Same Business Day
- Weight:
- 0.67 LBS
- MODEL:
- TAPERED ROLLER
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STEERING STEM
$56.95 -
MOOSE RACING Fork Seal Kit - 35 mm 56-143
MOOSE RACING
$39.95Fork seals wear faster than almost any other suspension component, leading to oil leakage, reduced damping performance, and costly damage to your stanchions. The MOOSE RACING Fork Seal Kit replaces worn seals with engineered MAX-LIFE material that...04070100- SKU:
- 04070100
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- INSIDE DIAMETER METRIC:
- 35.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- THICKNESS METRIC:
- 10.00 MM
- OUTSIDE DIAMETER METRIC:
- 47.30 MM
- PRODUCT NAME:
- FORK SEAL KIT
$39.95 -
MOOSE RACING Steering Stem Bearing Kit 22-1026
MOOSE RACING
$43.95Stock ball-type steering stem bearings wear quickly and require frequent maintenance—tapered roller bearings eliminate this hassle while delivering smoother handling and a significantly longer service life. The MOOSE RACING 22-1026 kit upgrades your bike...04100034- SKU:
- 04100034
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- MODEL:
- TAPERED ROLLER
- PRODUCT NAME:
- BEARING
- TYPE:
- STEERING STEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$43.95 -
MOOSE RACING Steering Stem Bearing Kit 22-1030
MOOSE RACING
$61.95Factory ball bearings wear quickly under racing loads and constant steering input, creating sloppy headstock geometry that compromises handling precision. The MOOSE RACING Steering Stem Bearing Kit 22-1030 upgrades your front end with tapered roller...04100035- SKU:
- 04100035
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- MODEL:
- TAPERED ROLLER
- PRODUCT NAME:
- BEARING
- TYPE:
- STEERING STEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$61.95 -
WORKS CONNECTION Pro Launch Start Device 12-606
WORKS CONNECTION
$148.95A reliable launch start device eliminates rider error and inconsistency at the gate—critical when fractions of a second separate winners from the rest. The WORKS CONNECTION Pro Launch uses a spring-less design that delivers positive engagement every...04500354- SKU:
- 04500354
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MOUNTING POSITION:
- FRONT
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- RED
- PRODUCT NAME:
- LAUNCH CONTROL
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MODEL:
- FOR KTM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
$148.95Qty in Cart: 0Quantity:Price:$148.95Subtotal: -
MOOSE RACING Fork Bushing Kit - 40.00 mm 38-6058
MOOSE RACING
$57.95Fork bushings wear with every stroke, and worn bushings compromise your suspension's precision and handling. The MOOSE RACING Fork Bushing Kit replaces all four critical contact points with dyno-tested components that outlast OEM bushings by a...04500143- SKU:
- 04500143
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- INNER BUSHING OUTSIDE DIAMETER IMPERIAL:
- 1.45'
- INNER BUSHING WIDTH IMPERIAL:
- 0.79'
- MATERIAL:
- PTFE
- PRODUCT NAME:
- BUSHING KIT
- INNER BUSHING INSIDE DIAMETER METRIC:
- 34.90 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
$57.95 -
MOOSE RACING Fork Bushing Kit - 47.00 mm 38-6064
MOOSE RACING
$57.95Fork bushings wear faster than most riders realize—degraded bushings cause vague handling, increased friction, and premature seal failure. The MOOSE RACING Fork Bushing Kit is engineered to outlast OEM components by a significant margin, restoring...04500145- SKU:
- 04500145
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- BUSHING KIT
- INNER BUSHING INSIDE DIAMETER METRIC:
- 41.90 MM
- INNER BUSHING WIDTH IMPERIAL:
- 0.79'
- INNER BUSHING OUTSIDE DIAMETER IMPERIAL:
- 1.72'
- MATERIAL:
- PTFE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
$57.95 -
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
$10.95Leaking 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
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
PARTS UNLIMITED Fork Seals - 33 mm ID x 46 mm OD x 10.5 mm T PUP40FORK455025
PARTS UNLIMITED
$9.95Worn 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
$9.95 -
PARTS UNLIMITED Fork Seals - 27 mm ID x 37 mm OD x 7.5 mm T PUP40FORK455005
PARTS UNLIMITED
$8.95Fork 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
$8.95 -
PARTS UNLIMITED Fork Seals - 35 mm ID x 47 mm OD x 10 mm T PUP40FORK455029
PARTS UNLIMITED
$10.95Fork 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
$10.95 -
PARTS UNLIMITED Fork Seals - 40 mm ID x 52 mm OD x 8/9.5 mm T PUP40FORK455050
PARTS UNLIMITED
$11.95Worn 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
$11.95 -
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
