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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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 -
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
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
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 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: $96.00Was: $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: $96.00Was: $149.99Qty in Cart: 0Quantity:Price:MSRP: $149.99Now: $96.00Was: $149.99Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LRA-046
FACTORY CONNECTION
$159.95Precise suspension tuning demands fork springs engineered to exacting standards—and FACTORY CONNECTION delivers exactly that. These 0.46 kg/mm LRA springs are cold-wound on CNC equipment and heat-tempered for consistent performance lap after lap. Whether...04050167- SKU:
- 04050167
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.48 kg/mm LRA-048
FACTORY CONNECTION
$159.95Precise suspension geometry demands fork springs that deliver consistent performance lap after lap—and Factory Connection's 0.48 kg/mm springs are engineered to do exactly that. Built with CNC-wound precision and heat-tempered for durability, these...04050168- SKU:
- 04050168
- Availability:
- Ships Same Business Day
- Weight:
- 2.61 LBS
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- SPRING RATE IMPERIAL:
- 26.90 LB/IN
- UNITS:
- PAIR
$159.95 -
FACTORY CONNECTION Front Fork Springs - 0.50 kg/mm LRA-050
FACTORY CONNECTION
$159.95Front fork springs are critical to suspension geometry and handling precision—incorrect rates lead to poor damping, inconsistent bottoming, and compromised cornering performance. The FACTORY CONNECTION LRA-050 delivers repeatable, fatigue-resistant...04050169- SKU:
- 04050169
- Availability:
- Ships Same Business Day
- Weight:
- 2.94 LBS
- SPRING RATE IMPERIAL:
- 28.00 LB/IN
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Fork Pressure Springs - 1.70 kg/mm PRESSSPG1.7K06
FACTORY CONNECTION
$55.00If you're running stock fork springs, you're likely sacrificing comfort and feedback on technical terrain. FACTORY CONNECTION Fork Pressure Springs deliver the compliance you need for small-bump sensitivity without compromising mid-stroke...04050171- SKU:
- 04050171
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- PRODUCT NAME:
- PRESSURE SPRING SET
- SPRING RATE IMPERIAL:
- 95.20 LB/IN
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- UNITS:
- PAIR
$55.00 -
FACTORY CONNECTION Front Fork Springs - 0.49 kg/mm LSU-049
FACTORY CONNECTION
$159.95Factory Connection front fork springs deliver predictable, consistent performance across repeated compression cycles—essential for maintaining suspension geometry during aggressive riding and racing. Precision manufacturing and heat treatment ensure...04050196- SKU:
- 04050196
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 27.40 LB/IN
- TYPE:
- FORK
- UNITS:
- PAIR
- PRODUCT NAME:
- SPRING KIT
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.52 kg/mm LSA-052
FACTORY CONNECTION
$159.95Factory Connection front fork springs deliver the precision and durability demanded by serious racers and high-performance riders. Cold-wound on CNC equipment and heat-tempered for fatigue resistance, these springs maintain consistent rates lap after...04050255- SKU:
- 04050255
- Availability:
- Ships Same Business Day
- Weight:
- 3.06 LBS
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 29.10 LB/IN
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FACTORY CONNECTION Fork Pressure Springs - 1.42 kg/mm PRESSSPG1.42-08
FACTORY CONNECTION
$55.00If you're spending half your ride fighting harsh fork feedback on technical terrain, you're wasting energy that should go into lines and throttle control. The FACTORY CONNECTION Fork Pressure Springs at 1.42 kg/mm deliver a noticeably lighter action that...04050258- SKU:
- 04050258
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- PRESSURE SPRING SET
- UNITS:
- PAIR
- SPRING RATE IMPERIAL:
- 79.52 LB/IN
$55.00 -
FACTORY CONNECTION Fork Pressure Springs - 1.61 kg/mm PRESSSPG1.61-08
FACTORY CONNECTION
$55.00If you're spending hours on technical terrain and your fork action feels harsh over small irregularities, you're losing both comfort and control—two things that directly impact your lap times and riding longevity. The FACTORY CONNECTION 1.61 kg/mm Fork...04050271- SKU:
- 04050271
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- PRODUCT NAME:
- PRESSURE SPRING SET
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- SPRING RATE IMPERIAL:
- 90.16 LB/IN
- TYPE:
- FORK
$55.00 -
FACTORY CONNECTION Fork Pressure Springs - 1.76 kg/mm PRESSSPG1.76-08
FACTORY CONNECTION
$55.00If you're running harsh, stiff fork springs that punish you on every small bump and square-edge braking impact, you're fighting your bike instead of riding it. The FACTORY CONNECTION 1.76 kg/mm Fork Pressure Springs deliver a lighter, more compliant...04050272- SKU:
- 04050272
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- PRESSURE SPRING SET
- SPRING RATE IMPERIAL:
- 98.56 LB/IN
- UNITS:
- PAIR
$55.00 -
On Sale
FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LLS-046
FACTORY CONNECTION
MSRP: $149.99Now: $96.00Was: $149.99Front fork springs are critical to your suspension's ability to maintain consistent ride height, support, and handling under load. The Factory Connection LLS-046 delivers precisely calibrated spring rate and fatigue-resistant construction, ensuring your...04050279- SKU:
- 04050279
- Availability:
- Ships Same Business Day
- Weight:
- 2.62 LBS
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.80 LB/IN
MSRP: $149.99Now: $96.00Was: $149.99 -
On Sale
FACTORY CONNECTION Front Fork Springs - 0.88 kg/mm LRV-088
FACTORY CONNECTION
MSRP: $109.99Now: $70.00Was: $109.99Factory Connection front fork springs deliver precise, consistent performance across every riding condition by maintaining accurate spring rates that refuse to drift over time. Whether you're fine-tuning suspension geometry on a championship-winning...04050319- SKU:
- 04050319
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 49.80 LB/IN
- UNITS:
- EACH
MSRP: $109.99Now: $70.00Was: $109.99Qty in Cart: 0Quantity:Price:MSRP: $109.99Now: $70.00Was: $109.99Subtotal:
