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
-
RACE TECH Fork Springs - 0.52 kg/mm FRSP 444652
RACE TECH
$149.99Fork spring performance directly impacts your suspension's ability to absorb impacts while maintaining chassis control during aggressive riding. The RACE TECH 0.52 kg/mm spring delivers precise damping characteristics with minimal deflection, ensuring...04050269- SKU:
- 04050269
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- SPRING RATE IMPERIAL:
- 29.10 LB/IN
- LENGTH IMPERIAL:
- 18.19'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.54 kg/mm FRSP 444654
RACE TECH
$149.99Precision suspension tuning demands springs that deliver consistent performance lap after lap. The RACE TECH Fork Springs 0.54 kg/mm offer the stiffness-to-mass ratio and accuracy you need to dial in your front end without compromising feel or feedback...04050270- SKU:
- 04050270
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 18.19'
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 30.20 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.38 kg/mm FRSP 444938
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and the RACE TECH 0.38 kg/mm fork springs deliver the consistency your front end needs for responsive handling and predictable feedback through every corner. Built from...04050830- SKU:
- 04050830
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 21.30 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 19.57'
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.40 kg/mm FRSP 444940
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and RACE TECH delivers with 0.40 kg/mm rates accurate to within 2%—eliminating guesswork from suspension setup. Whether you're dialing in front-end geometry for track conditions or...04050831- SKU:
- 04050831
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 19.57'
- SPRING RATE IMPERIAL:
- 22.40 LB/IN
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$149.99 -
RACE TECH Fork Springs - 0.44 kg/mm FRSP 444944
RACE TECH
$149.99Precision fork tuning demands springs that respond consistently across every input, and the RACE TECH 0.44 kg/mm springs deliver exactly that. Purpose-built for riders who need predictable, repeatable suspension performance without weight penalties,...04050833- SKU:
- 04050833
- Availability:
- Ships Same Business Day
- Weight:
- 2.76 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 24.60 LB/IN
- LENGTH IMPERIAL:
- 19.57'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 444946
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and the RACE TECH 0.46 kg/mm fork springs deliver predictable, consistent performance lap after lap. Whether you're dialing in your suspension for track conditions or fine-tuning...04050834- SKU:
- 04050834
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- LENGTH IMPERIAL:
- 19.57'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
$149.99 -
RACE TECH Fork Springs - 0.48 kg/mm FRSP 444948
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and RACE TECH delivers with tolerances held to within 2% across the entire rate curve. Whether you're dialing in front-end geometry on a track day or fine-tuning suspension...04050835- SKU:
- 04050835
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 26.90 LB/IN
- LENGTH IMPERIAL:
- 19.57'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.50 kg/mm FRSP 444950
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent performance lap after lap without deflection or degradation. The RACE TECH 0.50 kg/mm fork spring is engineered for riders who need predictable, linear spring rates in the critical...04050837- SKU:
- 04050837
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 19.57'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 28.00 LB/IN
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.44 kg/mm FRSP 444544
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent performance without adding unnecessary weight to your chassis. The RACE TECH 0.44 kg/mm fork springs are engineered with shot-peened, heat-treated chrome silicon steel to maintain exact spring...04050150- SKU:
- 04050150
- Availability:
- Ships Same Business Day
- Weight:
- 2.93 LBS
- LENGTH IMPERIAL:
- 17.91'
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 24.60 LB/IN
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 444546
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and the RACE TECH 0.46 kg/mm delivers the stiffness control you need without adding unnecessary weight. Whether you're dialing in suspension geometry for track work or fine-tuning...04050151- SKU:
- 04050151
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- LENGTH IMPERIAL:
- 17.91'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.50 kg/mm FRSP 444550
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent, predictable performance lap after lap. The RACE TECH 0.50 kg/mm fork springs combine shot-peened chrome silicon steel with heat treatment to achieve a stiffness-to-mass ratio that minimizes...04050153- SKU:
- 04050153
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- LENGTH IMPERIAL:
- 17.91'
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- SPRING RATE IMPERIAL:
- 28.00 LB/IN
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.52 kg/mm FRSP 444552
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and RACE TECH delivers that consistency with ±2% rate accuracy. These 0.52 kg/mm springs combine shot-peened, heat-treated chrome silicon steel with a high stiffness-to-mass ratio,...04050154- SKU:
- 04050154
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- LENGTH IMPERIAL:
- 17.91'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 29.10 LB/IN
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.52 kg/mm FRSP 434952
RACE TECH
$149.99Precision suspension tuning demands spring rates you can actually rely on. The RACE TECH Fork Springs deliver a 0.52 kg/mm rate with accuracy to within 2%, giving you the consistency needed for repeatable setup and predictable handling across multiple...04050156- SKU:
- 04050156
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 29.10 LB/IN
- OUTSIDE DIAMETER METRIC:
- 42.70 MM
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 19.41'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$149.99 -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 444746
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent performance lap after lap without deflection or fatigue. The RACE TECH 0.46 kg/mm fork springs combine shot-peened chromium silicon steel with heat treatment to achieve the stiffness-to-mass...04050097- SKU:
- 04050097
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.58'
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.54 kg/mm FRSP 444754
RACE TECH
$149.99Fork spring performance directly impacts your suspension's responsiveness, bottoming resistance, and overall chassis control. The RACE TECH 0.54 kg/mm springs deliver the precise spring rate needed for consistent lap times, whether you're dialing in a...04050101- SKU:
- 04050101
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 18.58'
- SPRING RATE IMPERIAL:
- 30.20 LB/IN
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$149.99 -
RACE TECH Fork Springs - 0.40 kg/mm FRSP 434640
RACE TECH
$149.99Front-end geometry and ride quality depend entirely on consistent spring rates, and any variance throws off your suspension tuning across the entire range. The RACE TECH Fork Springs deliver rate accuracy within 2% through precision heat-treatment and...04050024- SKU:
- 04050024
- Availability:
- Ships Same Business Day
- Weight:
- 2.71 LBS
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 22.40 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 43.50 MM
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 18.15'
$149.99 -
RACE TECH Fork Springs - 0.48 kg/mm FRSP 434648
RACE TECH
$149.99Precision fork control directly impacts your lap times and rider confidence—especially in high-speed corners and aggressive braking zones. RACE TECH Fork Springs deliver consistent, predictable damping characteristics that keep your suspension working at...04050028- SKU:
- 04050028
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- OUTSIDE DIAMETER METRIC:
- 43.50 MM
- SPRING RATE IMPERIAL:
- 26.90 LB/IN
- LENGTH IMPERIAL:
- 18.15'
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.38 kg/mm FRSP 444838
RACE TECH
$149.99Precision fork control starts with the right spring rate, and the RACE TECH 0.38 kg/mm fork springs deliver the consistency your suspension demands. Whether you're dialing in front-end geometry on a track or fine-tuning your bike's handling for canyon...04050029- SKU:
- 04050029
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- SPRING RATE IMPERIAL:
- 21.30 LB/IN
- LENGTH IMPERIAL:
- 18.90'
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Gold Valve Cartridge Fork Emulators for Damping Rod Forks - 41 mm FEGV 4101
RACE TECH
$199.99Damping rod forks limit your tuning options and performance potential—especially if you're pushing harder on the track or trail. The RACE TECH Gold Valve Cartridge Fork Emulators transform your existing fork into a responsive, adjustable suspension...FEGV4101- SKU:
- FEGV4101
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- GOLD VALVE
- PRODUCT NAME:
- CARTRIDGE EMULATOR
- OUTSIDE DIAMETER IMPERIAL:
- 1.61'
- TYPE:
- FORK
- UNITS:
- KIT
$199.99Qty in Cart: 0Quantity:Price:$199.99Subtotal: -
RACE TECH Gold Valve Cartridge Fork Emulators for Damping Rod Forks FEGV 3301
RACE TECH
$199.99Stock damping rod forks limit your suspension's potential, forcing you to choose between comfort and control. The RACE TECH Gold Valve Cartridge Fork Emulators transform your existing fork internals into a responsive, tunable system that rivals dedicated...FEGV3301- SKU:
- FEGV3301
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- TYPE:
- FORK
- PRODUCT NAME:
- CARTRIDGE EMULATOR
- COLOR/FINISH:
- GOLD
- OUTSIDE DIAMETER IMPERIAL:
- 0.94'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MODEL:
- GOLD VALVE
$199.99
