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 Gold Valve Fork Kit FMGV 3520G
RACE TECH
$229.99Front fork performance directly impacts your bike's handling precision, traction, and rider confidence—especially under aggressive braking and cornering. Race Tech's Gold Valve system gives you genuine tuning control by moving valving authority from...04500041- SKU:
- 04500041
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- COLOR/FINISH:
- GOLD
- OUTSIDE DIAMETER IMPERIAL:
- 1.10'
- PRODUCT NAME:
- FORK KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- TYPE 2
- MODEL:
- GOLD VALVE
$229.99 -
RACE TECH Gold Valve Fork Kit FMGV 2820G
RACE TECH
$229.99Stock fork valving compromises between conflicting demands—and you feel it through every corner and impact. The RACE TECH Gold Valve Fork Kit replaces your front cartridge's factory pistons with precision-engineered dual-port valves that triple flow...04500098- SKU:
- 04500098
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PRODUCT NAME:
- FORK KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- COLOR/FINISH:
- GOLD
- OUTSIDE DIAMETER IMPERIAL:
- 1.10'
- MODEL:
- GOLD VALVE
- TYPE:
- TYPE 2
$229.99Qty in Cart: 0Quantity:Price:$229.99Subtotal: -
RACE TECH Fork Springs - 0.42 kg/mm FRSP 454742
RACE TECH
$149.99Fork springs are the foundation of suspension tuning—get them wrong, and your bike won't handle predictably regardless of what else you upgrade. The RACE TECH 0.42 kg/mm delivers precise spring rates with shot-peened, heat-treated chrome silicon steel...04051039- SKU:
- 04051039
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.48 kg/mm FRSP 454748
RACE TECH
$149.99Precision fork performance demands springs engineered to exact specifications—and Race Tech delivers. These 0.48 kg/mm fork springs are shot-peened and heat-treated to handle aggressive riding and racing conditions without fade or inconsistency. With...04051040- SKU:
- 04051040
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
$149.99 -
RACE TECH Fork Springs - 0.50 kg/mm FRSP 454750
RACE TECH
$149.99Whether you're fine-tuning your suspension geometry or building a race-specific fork setup, fork spring rate is mission-critical—and tolerance stacking can kill your lap times. The RACE TECH 0.50 kg/mm fork springs deliver the precision and consistency...04051041- SKU:
- 04051041
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
RACE TECH Fork Springs - 0.52 kg/mm FRSP 454752
RACE TECH
$149.99Precision fork tuning demands springs that respond predictably across your entire suspension travel. The RACE TECH 0.52 kg/mm fork springs deliver the stiffness you need without excess weight, giving you the confidence to push harder through corners...04051042- SKU:
- 04051042
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
$149.99 -
RACE TECH Fork Springs - 0.54 kg/mm FRSP 454754
RACE TECH
$149.99Precise fork spring rates are non-negotiable when you're chasing lap time or pushing a bike to its limits. The RACE TECH Fork Springs deliver a 0.54 kg/mm rate with shot-peened, heat-treated chrome silicon steel that maintains accuracy within 2%—ensuring...04051043- SKU:
- 04051043
- Availability:
- Ships Same Business Day
- Weight:
- 3.31 LBS
$149.99 -
RACE TECH Fork Springs - 0.50 kg/mm FRSP 435150
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 are engineered with shot-peened, heat-treated chrome silicon steel to provide the exact stiffness your suspension...04050312- SKU:
- 04050312
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- OUTSIDE DIAMETER METRIC:
- 43.20 MM
- SPRING RATE IMPERIAL:
- 28.00 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- LENGTH IMPERIAL:
- 20'
$149.99 -
RACE TECH Fork Springs - 0.52 kg/mm FRSP 435152
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent performance lap after lap—and the RACE TECH 0.52 kg/mm Fork Springs are engineered for exactly that. With a stiffness-to-mass ratio optimized for responsive handling and minimal deflection,...04050313- SKU:
- 04050313
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- LENGTH IMPERIAL:
- 20'
- OUTSIDE DIAMETER METRIC:
- 43.20 MM
- SPRING RATE IMPERIAL:
- 29.10 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- TYPE:
- FORK
$149.99 -
RACE TECH Fork Springs - 0.38 kg/mm FRSP 444638
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent, predictable performance lap after lap. RACE TECH Fork Springs offer the stiffness-to-mass ratio and accuracy serious competitors require to dial in suspension feel without guesswork. With...04050262- SKU:
- 04050262
- Availability:
- Ships Same Business Day
- Weight:
- 2.71 LBS
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.19'
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 21.30 LB/IN
- TYPE:
- FORK
$149.99 -
On Sale
RACE TECH Fork Springs - 0.40 kg/mm FRSP 444640
RACE TECH
MSRP: $149.99Now: $96.00Was: $149.99Precision fork tuning demands springs engineered to exact specifications—and RACE TECH delivers. These 0.40 kg/mm springs offer the stiffness-to-mass ratio needed for responsive front-end geometry without adding unnecessary weight to your chassis...04050263- SKU:
- 04050263
- Availability:
- Ships Same Business Day
- Weight:
- 2.87 LBS
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 18.19'
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 22.40 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
MSRP: $149.99Now: $96.00Was: $149.99 -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 444646
RACE TECH
$149.99Precision fork suspension geometry demands spring rates that are consistently accurate and built to withstand the extreme forces of competitive riding. The RACE TECH 0.46 kg/mm Fork Springs deliver the stiffness-to-weight efficiency you need to maintain...04050266- SKU:
- 04050266
- Availability:
- Ships Same Business Day
- Weight:
- 2.83 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.19'
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$149.99 -
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
$149.99Qty in Cart: 0Quantity:Price:$149.99Subtotal: -
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
