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 Air Fork EZ Fill 26-357
WORKS CONNECTION
$59.95Air fork pressure adjustments shouldn't require tools, adapters, or guesswork—the WORKS CONNECTION EZ Fill system lets you dial in your suspension in seconds, trackside or at home. A properly tuned air fork is the foundation of responsive handling, and...04040313- SKU:
- 04040313
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MODEL:
- EZ FILL
- PRODUCT NAME:
- PRE-LOAD ADJUSTER
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- FORK
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
WORKS CONNECTION Air Fork EZ Fill 26-358
WORKS CONNECTION
$70.95Mid-ride pressure adjustments shouldn't require dismounting your bike or fumbling with tools. The WORKS CONNECTION Air Fork EZ Fill delivers precise air spring tuning in seconds, letting you dial in your suspension feel between motos or test sessions...04040507- SKU:
- 04040507
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- FORK
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MODEL:
- EZ FILL
- PRODUCT NAME:
- PRE-LOAD ADJUSTER
$70.95 -
WORKS CONNECTION Fork Bleeder Valves 26-330
WORKS CONNECTION
$35.95Air trapped in your fork lowers suspension responsiveness and creates unpredictable handling characteristics that compromise both speed and safety. The WORKS CONNECTION Fork Bleeder Valves eliminate this problem with a simple push-button design that...04040547- SKU:
- 04040547
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- BLEEDER
- TYPE:
- FORK
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
$35.95 -
WORKS CONNECTION Fork Bleeder Valve 26-321
WORKS CONNECTION
$35.95Air trapped in your fork internals compromises suspension responsiveness and creates unpredictable handling characteristics that directly impact lap times and rider confidence. The WORKS CONNECTION Fork Bleeder Valve eliminates this problem with a...04040555- SKU:
- 04040555
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- PRODUCT NAME:
- BLEEDER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SILVER
- TYPE:
- FORK
$35.95 -
WORKS CONNECTION Steering Stem Nut - Orange - KTM 24-380
WORKS CONNECTION
$37.95Stock steering stem nuts add unnecessary weight and lack the reliability features needed for aggressive track riding. The WORKS CONNECTION steering stem nut replaces that weak link with a precision-engineered component that shaves weight while adding...04100239- SKU:
- 04100239
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- ORANGE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- NUT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STEM NUT
- MATERIAL:
- 6061-T6 ALUMINUM
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
WORKS CONNECTION Steering Stem Nut - Red - Honda 24-305
WORKS CONNECTION
$37.95If you're running your Honda at the track, the steering stem nut is a critical fastening point that demands reliability and precision. WORKS CONNECTION's CNC-machined design eliminates the slop and flex of OEM components while the integrated safety wire...04100242- SKU:
- 04100242
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- 6061-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- NUT
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- TYPE:
- STEM NUT
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
WORKS CONNECTION Steering Stem Nut - Black - Honda 24-310
WORKS CONNECTION
$37.95If you're running a Honda at the track, your steering stem nut needs to be as reliable as your setup. This Works Connection piece replaces a weak point in your system with precision-engineered aluminum that weighs less while offering superior durability...04100243- SKU:
- 04100243
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- NUT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 6061-T6 ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- STEM NUT
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
PARTS UNLIMITED Fork Seals - 38 mm ID x 50 mm OD x 8mm T PUP40FORK455043
PARTS UNLIMITED
$10.95Fork 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
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
PARTS UNLIMITED Fork Seals - 43 mm ID x 54 mm OD x 11 mm T PUP40FORK455056
PARTS UNLIMITED
$11.95Fork 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
$11.95 -
PARTS UNLIMITED Fork Seals - 43 mm ID x 55 mm OD x 10.5 mm T PUP40FORK455058
PARTS UNLIMITED
$11.95Fork 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
$11.95 -
PARTS UNLIMITED Fork Seals - 31 mm ID x 43 mm OD x 12.5 mm T PUP40FORK455016
PARTS UNLIMITED
$10.95Worn 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
$10.95 -
PARTS UNLIMITED Fork Seals - 37 mm ID x 48 mm OD x 10.5 mm T PUP40FORK455038
PARTS UNLIMITED
$11.95Worn 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
$11.95 -
PARTS UNLIMITED Fork Seals - 41 mm ID x 53 mm OD x 10.5 mm T PUP40FORK455053
PARTS UNLIMITED
$11.95Worn 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
$11.95 -
PARTS UNLIMITED Fork Seals - 26 mm ID x 37 mm OD x 10.5 mm T PUP40FORK455004
PARTS UNLIMITED
$9.95Fork 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
$9.95 -
PARTS UNLIMITED Fork Seals - 46 mm ID x 58 mm OD x 9.5/11 mm T PUP40FORK455086
PARTS UNLIMITED
$32.95Fork 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
$32.95 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 58.5 mm OD x 4.7/11.5 mm T PUP40FORK455131
PARTS UNLIMITED
$59.95Worn 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
$59.95 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 58.1 mm OD x 8.5/10.5 mm T PUP40FORK455139
PARTS UNLIMITED
$33.95Fork 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
$33.95 -
PARTS UNLIMITED Fork Seals - 32 mm ID x 42 mm OD x 8/9 mm T PUP40FORK455066
PARTS UNLIMITED
$9.95Fork 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
$9.95 -
PARTS UNLIMITED Fork Seals - 48 mm ID x 57.9 mm OD x 11.5 mm T PUP40FORK455141
PARTS UNLIMITED
$61.95Worn 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
$61.95 -
PARTS UNLIMITED Fork Seals - 27 mm ID x 51.5 mm OD x 30 mm T PUP40FORK455142
PARTS UNLIMITED
$39.95Worn 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
$39.95
