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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On Sale
RACE TECH Fork Springs - 0.46 kg/mm FRSP 435146
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precise fork control is non-negotiable in high-performance racing, and fork spring rate directly determines your chassis responsiveness and rider confidence through corners. The RACE TECH Fork...FRSP435146- SKU:
- FRSP435146
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- LENGTH IMPERIAL:
- 20'
- OUTSIDE DIAMETER METRIC:
- 43.20 MM
- UNITS:
- PAIR
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
MSRP: $149.99Now: $134.99Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $134.99Was: $149.99Subtotal: -
On Sale
RACE TECH Fork Springs - 0.46 kg/mm FRSP 434946
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Fork springs are the foundation of responsive suspension geometry, directly influencing your bike's handling precision and ability to manage weight transfer under acceleration and braking. The RACE...FRSP434946- SKU:
- FRSP434946
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 19.41'
- OUTSIDE DIAMETER METRIC:
- 42.70 MM
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
MSRP: $149.99Now: $134.99Was: $149.99 -
On Sale
RACE TECH Fork Springs - 0.44 kg/mm FRSP 434944
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision suspension tuning demands fork springs that deliver consistent, predictable performance lap after lap. The RACE TECH 0.44 kg/mm springs provide the stiffness needed for aggressive riding...FRSP434944- SKU:
- FRSP434944
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- LENGTH IMPERIAL:
- 19.41'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 42.70 MM
- SPRING RATE IMPERIAL:
- 24.60 LB/IN
- PRODUCT NAME:
- SPRING KIT
MSRP: $149.99Now: $134.99Was: $149.99 -
On Sale
RACE TECH Fork Springs - 0.42 kg/mm FRSP 434942
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision suspension tuning demands springs that deliver consistent performance lap after lap. The RACE TECH Fork Springs offer a 0.42 kg/mm rate with exceptional stiffness-to-mass efficiency,...FRSP434942- SKU:
- FRSP434942
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- LENGTH IMPERIAL:
- 19.41'
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 42.70 MM
- SPRING RATE IMPERIAL:
- 23.50 LB/IN
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
MSRP: $149.99Now: $134.99Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $134.99Was: $149.99Subtotal: -
On Sale
RACE TECH Fork Springs - 0.38 kg/mm FRSP 434938
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision fork tuning demands springs that deliver consistent performance lap after lap. The RACE TECH 0.38 kg/mm fork springs combine a high stiffness-to-mass ratio with shot-peened, heat-treated...FRSP434938- SKU:
- FRSP434938
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- OUTSIDE DIAMETER METRIC:
- 42.70 MM
- SPRING RATE IMPERIAL:
- 21.30 LB/IN
- LENGTH IMPERIAL:
- 19.41'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
MSRP: $149.99Now: $134.99Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $134.99Was: $149.99Subtotal: -
On Sale
RACE TECH Fork Springs - 0.39 kg/mm FRSP 414839
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision fork tuning demands springs with predictable, consistent rates—and that's exactly what RACE TECH delivers. These 0.39 kg/mm springs offer the stiffness-to-mass ratio serious riders need for...FRSP414839- SKU:
- FRSP414839
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- LENGTH IMPERIAL:
- 18.94'
- OUTSIDE DIAMETER METRIC:
- 41.20 MM
- SPRING RATE IMPERIAL:
- 21.80 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
MSRP: $149.99Now: $134.99Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $134.99Was: $149.99Subtotal: -
On Sale
RACE TECH Fork Springs - 0.46 kg/mm FRSP 414746
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision fork tuning demands springs that deliver consistent performance lap after lap without compromise. The RACE TECH 0.46 kg/mm fork springs combine shot-peened chrome silicon steel with heat...FRSP414746- SKU:
- FRSP414746
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- OUTSIDE DIAMETER METRIC:
- 41.20 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- LENGTH IMPERIAL:
- 18.54'
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- UNITS:
- PAIR
MSRP: $149.99Now: $134.99Was: $149.99 -
On Sale
RACE TECH Fork Springs - 0.46 kg/mm FRSP 414646
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision fork performance demands springs that deliver consistent damping characteristics without adding unnecessary weight to your front end. RACE TECH's 0.46 kg/mm fork springs are engineered for...FRSP414646- SKU:
- FRSP414646
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- OUTSIDE DIAMETER METRIC:
- 41.20 MM
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.19'
MSRP: $149.99Now: $134.99Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $134.99Was: $149.99Subtotal: -
On Sale
RACE TECH Fork Springs - 0.48 kg/mm FRSP 395148
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99Precision fork tuning demands springs engineered to exact specifications, and RACE TECH delivers with shot-peened, heat-treated chrome silicon steel that maintains consistent performance lap after...FRSP395148- SKU:
- FRSP395148
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 20.16'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 26.90 LB/IN
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 41.20 MM
MSRP: $149.99Now: $134.99Was: $149.99 -
On Sale
RACE TECH Fork Springs - 0.26 kg/mm FRSP 243826
RACE TECH
MSRP: $149.99Now: $134.99Was: $149.99If you're running a fork setup that demands precision damping characteristics, fork spring rate accuracy directly impacts your suspension's ability to maintain consistent bottoming resistance and...FRSP243826- SKU:
- FRSP243826
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- LENGTH IMPERIAL:
- 14.84'
- OUTSIDE DIAMETER METRIC:
- 24.30 MM
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 14.60 LB/IN
- RIDING STYLE:
- OFF-ROAD
MSRP: $149.99Now: $134.99Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $134.99Was: $149.99Subtotal: -
On Sale
RACE TECH Gold Valve Fork Kit FMGV 2820
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99If you're running a front cartridge fork, your suspension's performance is limited by factory valve design. The RACE TECH Gold Valve Fork Kit FMGV 2820 replaces restrictive OEM pistons with dual-port...FMGV2820- SKU:
- FMGV2820
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MODEL:
- GOLD VALVE
- OUTSIDE DIAMETER IMPERIAL:
- 1.10'
- COLOR/FINISH:
- GOLD
- UNITS:
- KIT
- PRODUCT NAME:
- FORK KIT
- RIDING STYLE:
- STREET
- TYPE:
- STANDARD
MSRP: $199.99Now: $179.99Was: $199.99 -
On Sale
RACE TECH Gold Valve Fork Kit FMGV 2530
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99Factory fork valving limits your suspension's potential for customization and responsive handling. The RACE TECH Gold Valve Fork Kit FMGV 2530 replaces restrictive OEM pistons with dual-port G2-R...FMGV2530- SKU:
- FMGV2530
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- MODEL:
- GOLD VALVE
- COLOR/FINISH:
- GOLD
- UNITS:
- KIT
- OUTSIDE DIAMETER IMPERIAL:
- 0.98'
- PRODUCT NAME:
- FORK KIT
- RIDING STYLE:
- STREET
- TYPE:
- STANDARD
MSRP: $199.99Now: $179.99Was: $199.99 -
On Sale
RACE TECH Gold Valve Fork Kit FMGV 2520
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99Front fork performance is only as good as your valving setup, and OEM cartridge forks often leave control and responsiveness on the table. The RACE TECH Gold Valve Fork Kit FMGV 2520 replaces...FMGV2520- SKU:
- FMGV2520
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- GOLD
- OUTSIDE DIAMETER IMPERIAL:
- 0.98'
- PRODUCT NAME:
- FORK KIT
- TYPE:
- STANDARD
- UNITS:
- KIT
- MODEL:
- GOLD VALVE
- RIDING STYLE:
- STREET
MSRP: $199.99Now: $179.99Was: $199.99 -
On Sale
RACE TECH Gold Valve Fork Kit FMGV 2320
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99Stock fork cartridges limit your suspension's potential with restrictive piston designs that sacrifice control for simplicity. Race Tech's Gold Valve system unlocks three times the flow area through...FMGV2320- SKU:
- FMGV2320
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- MODEL:
- GOLD VALVE
- TYPE:
- STANDARD
- OUTSIDE DIAMETER IMPERIAL:
- 0.91'
- PRODUCT NAME:
- FORK KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GOLD
- UNITS:
- KIT
MSRP: $199.99Now: $179.99Was: $199.99 -
On Sale
RACE TECH Gold Valve Fork Kit FMGV 2040
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99Factory fork valving often compromises between suppleness and support—you get one or the other, rarely both. The RACE TECH Gold Valve Fork Kit FMGV 2040 replaces your stock piston assemblies with...FMGV2040- SKU:
- FMGV2040
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- GOLD
- OUTSIDE DIAMETER IMPERIAL:
- 0.79'
- PRODUCT NAME:
- FORK KIT
- TYPE:
- STANDARD
- UNITS:
- KIT
- MODEL:
- GOLD VALVE
- RIDING STYLE:
- STREET
MSRP: $199.99Now: $179.99Was: $199.99Qty in Cart: 0Quantity:Price:MSRP: $199.99Now: $179.99Was: $199.99Subtotal: -
On Sale
RACE TECH Super Slick Outer Fork Bushings - 49 mm x 15 mm W x 1.5 mm T FMBO 491515 P
RACE TECH
MSRP: $49.98Now: $44.98Was: $49.98Fork bushings are critical to suspension responsiveness and longevity—worn or high-friction bushings create stiction that deadens your bike's handling and accelerates wear on fork internals. RACE...FMBO491515P- SKU:
- FMBO491515P
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 1.50 MM
- TYPE:
- FORK
- UNITS:
- PAIR
- MOUNTING POSITION:
- OUTER
- FOR FORK TUBE DIAMETER METRIC:
- 49.00 MM
- INNER BUSHING WIDTH METRIC:
- 15.00 MM
- MODEL:
- SUPER SLICK
- PRODUCT NAME:
- BUSHING KIT
MSRP: $49.98Now: $44.98Was: $49.98 -
On Sale
RACE TECH Super Slick Outer Fork Bushings - 47 mm x 15 mm W x 2 mm T FMBO 47152 P
RACE TECH
MSRP: $34.99Now: $31.49Was: $34.99Worn fork bushings introduce friction and play into your suspension system, robbing you of responsive handling and precise feedback. RACE TECH Super Slick Outer Fork Bushings eliminate that slop with...FMBO47152P- SKU:
- FMBO47152P
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- FOR FORK TUBE DIAMETER METRIC:
- 47.00 MM
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 2.00 MM
- TYPE:
- FORK
- UNITS:
- PAIR
- INNER BUSHING WIDTH METRIC:
- 15.00 MM
- MODEL:
- SUPER SLICK
- MOUNTING POSITION:
- OUTER
- PRODUCT NAME:
- BUSHING KIT
MSRP: $34.99Now: $31.49Was: $34.99 -
On Sale
RACE TECH Super Slick Outer Fork Bushings - 45 mm x 15 mm W x 2 mm T FMBO 45152 P
RACE TECH
MSRP: $37.95Now: $34.16Was: $37.95Fork bushing friction directly impacts your suspension's responsiveness and wear rate—especially critical in racing applications where precise feedback translates to lap time gains. RACE TECH's Super...FMBO45152P- SKU:
- FMBO45152P
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- INNER BUSHING WIDTH METRIC:
- 15.00 MM
- MODEL:
- SUPER SLICK
- PRODUCT NAME:
- BUSHING KIT
- FOR FORK TUBE DIAMETER METRIC:
- 45.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- MOUNTING POSITION:
- OUTER
- THICKNESS METRIC:
- 2.00 MM
MSRP: $37.95Now: $34.16Was: $37.95 -
On Sale
RACE TECH Gold Valve Cartridge Fork Emulators for Damping Rod Forks - 38 mm/39 mm FEGV 3801
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99Damping rod forks don't have to feel like budget suspension. The RACE TECH Gold Valve Cartridge Fork Emulators transform your 38mm or 39mm forks into responsive, tunable performance units that rival...FEGV3801- SKU:
- FEGV3801
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- OUTSIDE DIAMETER IMPERIAL:
- 1.22'
- PRODUCT NAME:
- CARTRIDGE EMULATOR
- MODEL:
- GOLD VALVE
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
MSRP: $199.99Now: $179.99Was: $199.99 -
On Sale
RACE TECH Gold Valve Cartridge Fork Emulators for Damping Rod Forks - 35 mm/36 mm FEGV 3501
RACE TECH
MSRP: $199.99Now: $179.99Was: $199.99Damping rod forks don't have to feel like budget suspension anymore. The RACE TECH Gold Valve Cartridge Fork Emulators transform your existing fork into a responsive, tunable setup that rivals...FEGV3501- SKU:
- FEGV3501
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- TYPE:
- FORK
- MODEL:
- GOLD VALVE
- PRODUCT NAME:
- CARTRIDGE EMULATOR
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- OUTSIDE DIAMETER IMPERIAL:
- 1.14'
MSRP: $199.99Now: $179.99Was: $199.99
