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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RACE TECH Super Slick Inner Fork Bushing - 47 mm X 20 mm W x 1 mm T FMBI 47201 P
RACE TECH
$31.95Suspension performance hinges on reducing friction at every contact point—and fork bushings are critical. The RACE TECH Super Slick Inner Fork Bushing delivers measurably lower friction than standard options, translating to more responsive fork action...FMBI47201P- SKU:
- FMBI47201P
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- THICKNESS METRIC:
- 1.00 MM
- UNITS:
- PAIR
- FOR FORK TUBE DIAMETER METRIC:
- 47.00 MM
- INNER BUSHING WIDTH METRIC:
- 20.00 MM
- MOUNTING POSITION:
- INNER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- MODEL:
- SUPER SLICK
- PRODUCT NAME:
- BUSHING KIT
$31.95Qty in Cart: 0Quantity:Price:$31.95Subtotal: -
RACE TECH Fork Springs - 0.32 kg/mm FRSP 324532
RACE TECH
$149.99Suspension geometry demands precision, and your fork springs are no exception. RACE TECH Fork Springs deliver repeatability within 2% accuracy—essential for dialing in consistent front-end feel across practice sessions and race runs. Built from...FRSP324532- SKU:
- FRSP324532
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- OUTSIDE DIAMETER METRIC:
- 32.60 MM
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 17.56'
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 17.90 LB/IN
- TYPE:
- FORK
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 364746
RACE TECH
$149.99Fork springs are critical to suspension performance—they directly control your bike's ability to absorb impacts, maintain chassis geometry, and transfer power to the track. The RACE TECH 0.46 kg/mm spring delivers the precision stiffness you need for...FRSP364746- SKU:
- FRSP364746
- Availability:
- Ships Same Business Day
- Weight:
- 2.88 LBS
- LENGTH IMPERIAL:
- 18.58'
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 35.80 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
$149.99 -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 375046
RACE TECH
$149.99Precision fork performance demands springs engineered to exact specifications—and RACE TECH delivers. These 0.46 kg/mm springs combine shot-peened, heat-treated chrome silicon steel with a stiffness-to-mass ratio that translates to responsive front-end...FRSP375046- SKU:
- FRSP375046
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- OUTSIDE DIAMETER METRIC:
- 36.80 MM
- LENGTH IMPERIAL:
- 18.58'
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- TYPE:
- FORK
$149.99 -
RACE TECH Fork Springs - 0.50 kg/mm FRSP 395150
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications—and the RACE TECH 0.50 kg/mm fork springs deliver repeatability that separates competitive setups from guesswork. With heat-treated chrome silicon construction and shot-peening for...FRSP395150- SKU:
- FRSP395150
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- SPRING RATE IMPERIAL:
- 28.00 LB/IN
- LENGTH IMPERIAL:
- 20.16'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 41.20 MM
$149.99 -
RACE TECH Fork Springs - 0.47 kg/mm FRSP 405147
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and the RACE TECH 0.47 kg/mm fork springs deliver the consistency your suspension setup requires. Shot-peened chrome silicon steel and heat treatment ensure reliability through...FRSP405147- SKU:
- FRSP405147
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- LENGTH IMPERIAL:
- 20.00'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 39.50 MM
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 26.30 LB/IN
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.49 kg/mm FRSP 405149
RACE TECH
$149.99Precision fork tuning demands springs that deliver exact rate consistency lap after lap. The RACE TECH 0.49 kg/mm fork springs eliminate guesswork with shot-peened, heat-treated chrome silicon steel that maintains accuracy within 2%—critical for...FRSP405149- SKU:
- FRSP405149
- Availability:
- Ships Same Business Day
- Weight:
- 3.12 LBS
- LENGTH IMPERIAL:
- 20.00'
- OUTSIDE DIAMETER METRIC:
- 39.50 MM
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 27.40 LB/IN
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.42 kg/mm FRSP 414642
RACE TECH
$149.99Precise fork spring rates are non-negotiable in racing—even minor inconsistencies compromise handling and lap times. RACE TECH's 0.42 kg/mm springs deliver accurate, repeatable performance with a high stiffness-to-mass ratio that minimizes unsprung...FRSP414642- SKU:
- FRSP414642
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- SPRING RATE IMPERIAL:
- 23.50 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.19'
- OUTSIDE DIAMETER METRIC:
- 41.20 MM
$149.99 -
FACTORY CONNECTION Front Fork Springs - 0.45 kg/mm LAU-045
FACTORY CONNECTION
$159.95Factory Connection front fork springs deliver precision suspension tuning for riders who demand exact spring rates and consistent performance lap after lap. Whether you're dialing in your setup for track days or professional competition, these 0.45 kg/mm...LAU045- SKU:
- LAU045
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- SPRING RATE IMPERIAL:
- 25.20 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$159.95 -
On Sale
FACTORY CONNECTION Front Fork Springs - 0.47 kg/mm LAU-047
FACTORY CONNECTION
MSRP: $159.95Now: $102.00Was: $159.95Suspension performance hinges on consistent spring rates, and Factory Connection's front fork springs deliver exactly that with precision CNC cold-winding and heat-tempering. Whether you're pushing through technical terrain or fine-tuning your setup,...LAU047- SKU:
- LAU047
- Availability:
- Ships Same Business Day
- Weight:
- 2.69 LBS
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 26.30 LB/IN
MSRP: $159.95Now: $102.00Was: $159.95Qty in Cart: 0Quantity:Price:MSRP: $159.95Now: $102.00Was: $159.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.49 kg/mm LAU-049
FACTORY CONNECTION
$159.95Suspension geometry is only as good as your springs—and Factory Connection front fork springs are engineered to handle the demands of serious off-road racing without fade or deflection. These precision-wound springs maintain consistent spring rates lap...LAU049- SKU:
- LAU049
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 27.40 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LSA-046
FACTORY CONNECTION
$159.95Front fork springs are critical suspension components that directly impact your bike's handling, stability, and ability to absorb impacts at speed. Factory Connection's LSA-046 springs deliver consistent, predictable performance lap after lap by...LSA046- SKU:
- LSA046
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- UNITS:
- PAIR
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.48 kg/mm LSA-048
FACTORY CONNECTION
$159.95Suspension geometry is only as good as your spring rates, and inconsistent or worn fork springs will rob you of control and predictability on every lap. The Factory Connection LSA-048 front fork springs are cold-wound on precision CNC equipment and...LSA048- SKU:
- LSA048
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 26.90 LB/IN
$159.95 -
FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LSB-046
FACTORY CONNECTION
$159.95Front fork springs are critical to suspension performance—they directly affect your bike's handling, comfort, and ability to maintain traction through aggressive cornering and rough terrain. Factory Connection's LSB-046 springs deliver consistent,...LSB046- SKU:
- LSB046
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.33 kg/mm IIU-033
FACTORY CONNECTION
$159.95Front fork springs are critical to your suspension's ability to absorb impacts, maintain consistent ride height, and keep your tire contact patch planted through corners. Factory Connection's 0.33 kg/mm springs deliver the precision rate you need to dial...IIU033- SKU:
- IIU033
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 18.50 LB/IN
$159.95 -
FACTORY CONNECTION Fork Seal Kit for KYB Forks - Fits all 46 mm Kayaba forks FCF-46U
FACTORY CONNECTION
$39.95Fork seal degradation is one of the most common causes of premature fork failure and poor suspension performance. The Factory Connection FCF-46U Fork Seal Kit addresses this directly with a precision-engineered redesign that dramatically extends seal...FCF46U- SKU:
- FCF46U
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- INSIDE DIAMETER METRIC:
- 44.47 MM
- MATERIAL:
- RUBBER
- OUTSIDE DIAMETER METRIC:
- 58.10 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.45'
- THICKNESS METRIC:
- 11.50 MM
- UNITS:
- KIT
$39.95 -
On Sale
FACTORY CONNECTION High Performance Guide Bushing Set DUGUIDESET48WP
FACTORY CONNECTION
MSRP: $44.00Now: $28.00Was: $44.00Fork stiction is the silent killer of suspension performance—it creates unpredictable resistance that prevents your forks from responding precisely to trail inputs and setup changes. FACTORY CONNECTION's High Performance Guide Bushing Set eliminates this...04500052- SKU:
- 04500052
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MOUNTING POSITION:
- OUTER
- UNITS:
- SET
- MOUNTING POSITION:
- INNER
- PRODUCT NAME:
- GUIDE BUSHING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
MSRP: $44.00Now: $28.00Was: $44.00Qty in Cart: 0Quantity:Price:MSRP: $44.00Now: $28.00Was: $44.00Subtotal: -
On Sale
FACTORY CONNECTION High Performance Piston Bushing Set FBPISTONSET48WP
FACTORY CONNECTION
MSRP: $44.00Now: $28.00Was: $44.00Fork stiction robs your suspension of responsiveness, forcing you to compensate with setup changes that never quite feel right. The FACTORY CONNECTION High Performance Piston Bushing Set eliminates this problem at the source, delivering consistently...04500053- SKU:
- 04500053
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- MOUNTING POSITION:
- OUTER
- UNITS:
- SET
- PRODUCT NAME:
- PISTON BUSHING KIT
- MOUNTING POSITION:
- INNER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
MSRP: $44.00Now: $28.00Was: $44.00 -
On Sale
FACTORY CONNECTION Front Fork Springs - 0.27 kg/mm IIU-027
FACTORY CONNECTION
MSRP: $149.99Now: $102.00Was: $149.99Precision fork performance hinges on consistent spring rates that maintain proper suspension geometry throughout your ride. Factory Connection front fork springs are engineered to deliver predictable damping characteristics lap after lap, eliminating the...04050161- SKU:
- 04050161
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 15.10 LB/IN
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
MSRP: $149.99Now: $102.00Was: $149.99 -
On Sale
FACTORY CONNECTION Front Fork Springs - 0.39 kg/mm LRA-039
FACTORY CONNECTION
MSRP: $159.95Now: $102.00Was: $159.95Front fork springs are the foundation of your suspension's ability to absorb impacts and maintain consistent ride height under dynamic conditions. Factory Connection's 0.39 kg/mm rate delivers the precision tuning serious riders demand, with construction...04050163- SKU:
- 04050163
- Availability:
- Ships Same Business Day
- Weight:
- 2.66 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 21.80 LB/IN
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
MSRP: $159.95Now: $102.00Was: $159.95Qty in Cart: 0Quantity:Price:MSRP: $159.95Now: $102.00Was: $159.95Subtotal:
