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 Fork Springs - 0.90 kg/mm FRSP 4374090
RACE TECH
$109.99Precision fork tuning demands springs that deliver consistent performance lap after lap. The RACE TECH 0.90 kg/mm fork springs offer a stiffness-to-mass ratio engineered for responsive handling without sacrificing compliance, making them ideal for riders...04050303- SKU:
- 04050303
- Availability:
- Ships Same Business Day
- Weight:
- 2.94 LBS
- OUTSIDE DIAMETER METRIC:
- 40.00 MM - 43.00 MM
- SPRING RATE IMPERIAL:
- 50.40 LB/IN
- LENGTH IMPERIAL:
- 29.13'
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- FORK
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
$109.99 -
RACE TECH Fork Springs - 0.49 kg/mm FRSP 434949
RACE TECH
$149.99Precision fork tuning demands springs engineered to exacting standards, and RACE TECH delivers exactly that. These 0.49 kg/mm springs combine a high stiffness-to-mass ratio with shot-peened, heat-treated chrome silicon steel—ensuring consistent...04050146- SKU:
- 04050146
- Availability:
- Ships Same Business Day
- Weight:
- 2.98 LBS
- OUTSIDE DIAMETER METRIC:
- 42.80 MM
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 27.40 LB/IN
- TYPE:
- FORK
- LENGTH IMPERIAL:
- 19.41'
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.38 kg/mm FRSP 444538
RACE TECH
$149.99Precision fork control demands springs engineered to exact specifications—and RACE TECH's 0.38 kg/mm fork springs deliver the consistency that separates podium finishes from mid-pack results. Shot-peened and heat-treated chrome silicon steel ensures...04050147- SKU:
- 04050147
- Availability:
- Ships Same Business Day
- Weight:
- 2.67 LBS
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 17.91'
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 21.30 LB/IN
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.38 kg/mm FRSP 444738
RACE TECH
$149.99Precision fork tuning demands springs that deliver consistent, predictable performance lap after lap. The RACE TECH 0.38 kg/mm fork springs are engineered with chrome silicon steel and shot-peening to maintain exact spring rates under extreme suspension...04050093- SKU:
- 04050093
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 21.30 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.58'
$149.99 -
RACE TECH Fork Springs - 0.40 kg/mm FRSP 444740
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and the RACE TECH 0.40 kg/mm fork springs deliver consistency that matches professional-grade expectations. Shot-peened and heat-treated chrome silicon steel ensures durability...04050094- SKU:
- 04050094
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- PRODUCT NAME:
- SPRING KIT
- LENGTH IMPERIAL:
- 18.58'
- SPRING RATE IMPERIAL:
- 22.40 LB/IN
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.42 kg/mm FRSP 444742
RACE TECH
$149.99If you're running a competition machine that demands precise suspension tuning, fork spring rate accuracy directly impacts your lap times and rider feedback. The RACE TECH 0.42 kg/mm springs deliver consistent performance across the entire stroke with...04050095- SKU:
- 04050095
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- LENGTH IMPERIAL:
- 18.58'
- PRODUCT NAME:
- SPRING KIT
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 23.50 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
$149.99 -
RACE TECH Fork Springs - 0.44 kg/mm FRSP 444744
RACE TECH
$149.99Fork springs are the foundation of your front-end performance—too soft and you'll lose precision through corners; too stiff and you'll sacrifice compliance on rough surfaces. The RACE TECH 0.44 kg/mm fork springs deliver the high stiffness-to-mass ratio...04050096- SKU:
- 04050096
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 24.60 LB/IN
- LENGTH IMPERIAL:
- 18.58'
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$149.99 -
RACE TECH Fork Springs - 0.50 kg/mm FRSP 444750
RACE TECH
$149.99Front suspension performance hinges on spring rate consistency, and the RACE TECH Fork Springs deliver precision engineering that separates podium finishes from DNFs. Built from heat-treated chrome silicon steel and shot-peened for durability, these 0.50...04050099- SKU:
- 04050099
- Availability:
- Ships Same Business Day
- Weight:
- 2.57 LBS
- OUTSIDE DIAMETER METRIC:
- 43.60 MM
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
- SPRING RATE IMPERIAL:
- 28.00 LB/IN
- LENGTH IMPERIAL:
- 18.58'
$149.99 -
RACE TECH Fork Springs - 0.46 kg/mm FRSP 434646
RACE TECH
$149.99Precision fork tuning demands springs engineered to exact specifications, and RACE TECH delivers with these 0.46 kg/mm springs built for competitors who refuse compromise. Shot-peened and heat-treated chrome silicon steel ensures consistent performance...04050027- SKU:
- 04050027
- Availability:
- Ships Same Business Day
- Weight:
- 2.86 LBS
- OUTSIDE DIAMETER METRIC:
- 43.50 MM
- PRODUCT NAME:
- SPRING KIT
- UNITS:
- PAIR
- LENGTH IMPERIAL:
- 18.15'
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- TYPE:
- FORK
$149.99 -
FACTORY CONNECTION Front Fork Springs - 0.42 kg/mm LRI-042
FACTORY CONNECTION
$159.95Suspension performance hinges on fork spring consistency, and Factory Connection's precision-wound springs deliver the repeatability you need lap after lap. Built with heat-tempered, shot-peened construction, these springs resist fatigue under extreme...04050335- SKU:
- 04050335
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- SPRING RATE IMPERIAL:
- 23.50 LB/IN
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- FORK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
$159.95 -
FACTORY CONNECTION Front Fork Springs - 0.44 kg/mm LRI-044
FACTORY CONNECTION
$159.95Factory Connection front fork springs deliver consistent, predictable suspension response across your entire stroke—critical for maintaining chassis geometry and feedback through demanding terrain. Precision manufacturing ensures your fork pressure...04050336- SKU:
- 04050336
- Availability:
- Ships Same Business Day
- Weight:
- 2.72 LBS
- SPRING RATE IMPERIAL:
- 24.60 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$159.95 -
FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LRI-046
FACTORY CONNECTION
$159.95Front fork springs are the foundation of suspension performance—they determine how your bike responds to inputs, absorbs impacts, and maintains geometry under load. Factory Connection's precision-wound springs deliver consistent rates and predictable...04050337- SKU:
- 04050337
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
$159.95 -
FACTORY CONNECTION Front Fork Springs - 0.48 kg/mm LRI-048
FACTORY CONNECTION
$159.95Precision fork springs are foundational to your suspension's performance—they directly impact handling response, bottoming resistance, and ride consistency across varying track conditions. The FACTORY CONNECTION LRI-048 delivers the accurate spring rate...04050338- SKU:
- 04050338
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 26.90 LB/IN
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
$159.95 -
On Sale
PIVOT WORKS Steering Stem Bearing Kit PWSSK-G03-001
PIVOT WORKS
MSRP: $69.20Now: $49.00Was: $69.20Worn or contaminated steering stem bearings directly compromise your bike's handling precision and introduce dangerous play in the front end. The PIVOT WORKS Steering Stem Bearing Kit restores factory-spec steering response and eliminates the stiction...04100129- SKU:
- 04100129
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- PRODUCT NAME:
- STEERING STEM BEARING
- COLOR/FINISH:
- CHROME
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
MSRP: $69.20Now: $49.00Was: $69.20 -
PIVOT WORKS Steering Stem Bearing Kit PWSSK-H05-420
PIVOT WORKS
$82.11Worn or contaminated steering stem bearings rob you of precise handling feedback and introduce play into your steering input—critical issues at speed or on technical courses. The PIVOT WORKS Steering Stem Bearing Kit restores the tight, responsive...04100130- SKU:
- 04100130
- Availability:
- Ships Same Business Day
- Weight:
- 0.52 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- CHROME
- UNITS:
- KIT
- PRODUCT NAME:
- STEERING STEM BEARING
$82.11 -
PIVOT WORKS Steering Stem Bearing Kit PWSSK-HQ01-001
PIVOT WORKS
$82.95Steering feel degrades when bearing tolerances wear or contamination from pressure washing compromises your fork seals. The PIVOT WORKS Steering Stem Bearing Kit restores precision handling and eliminates the vague, notchy feedback that costs you control...04100132- SKU:
- 04100132
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- STEERING STEM BEARING
$82.95 -
PIVOT WORKS Steering Stem Bearing Kit PWSSK-HQ02-001
PIVOT WORKS
$60.17Steering responsiveness deteriorates when bearing surfaces accumulate debris or corrosion, compromising both precision and safety on track or road. The PIVOT WORKS Steering Stem Bearing Kit restores factory-spec geometry and eliminates the stiction that...04100133- SKU:
- 04100133
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- STEERING STEM BEARING
$60.17 -
PIVOT WORKS Fork Seal/Bushing Kit PWFFK-K11-021
PIVOT WORKS
$116.88Fork seals degrade from constant compression cycles and exposure to moisture, leading to oil leakage, air infiltration, and loss of suspension responsiveness. A complete seal and bushing replacement restores your fork's damping characteristics and...04070276- SKU:
- 04070276
- Availability:
- Ships Same Business Day
- Weight:
- 0.59 LBS
- PRODUCT NAME:
- SEAL AND BUSHING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
$116.88 -
PIVOT WORKS Fork Seal/Bushing Kit PWFFK-T05-531
PIVOT WORKS
$116.88Fork seals and bushings wear down with every ride, leading to oil leakage, reduced damping performance, and accelerated component degradation. This complete kit eliminates the need to source individual parts separately, ensuring proper fitment and...04070280- SKU:
- 04070280
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL AND BUSHING KIT
$116.88 -
PIVOT WORKS Fork Seal/Bushing Kit PWFFK-T06-531
PIVOT WORKS
$130.95Fork seal degradation is one of the most common causes of suspension performance loss and expensive secondary damage to fork internals. The PIVOT WORKS Fork Seal/Bushing Kit PWFFK-T06-531 gives you everything needed to restore your suspension to factory...04070281- SKU:
- 04070281
- Availability:
- Ships Same Business Day
- Weight:
- 0.67 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SEAL AND BUSHING KIT
- UNITS:
- KIT
$130.95
