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 - 0.92 kg/mm LRV-092
FACTORY CONNECTION
$119.95Front fork springs are fundamental to your suspension's responsiveness and handling precision—and cheap springs will rob you of both. The FACTORY CONNECTION LRV-092 delivers the consistent spring rate and durability demanded by serious riders and racers...04050320- SKU:
- 04050320
- Availability:
- Ships Same Business Day
- Weight:
- 2.93 LBS
- SPRING RATE IMPERIAL:
- 51.50 LB/IN
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
FACTORY CONNECTION Front Fork Springs - 0.45 kg/mm LRN-045
FACTORY CONNECTION
$159.95Factory Connection front fork springs deliver the precision and durability demanded by serious racers and suspension tuners. Cold-wound on CNC equipment with heat-tempering and shot-peening, these springs maintain consistent rates through thousands of...04050823- SKU:
- 04050823
- Availability:
- Ships Same Business Day
- Weight:
- 2.91 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
- PRODUCT NAME:
- SPRING KIT
- SPRING RATE IMPERIAL:
- 25.20 LB/IN
- UNITS:
- PAIR
$159.95 -
MOOSE RACING Fork Bushing Kit - 47.00 mm 38-6063
MOOSE RACING
$57.95Fork bushings wear faster than any other suspension component, directly impacting your bike's handling precision and damping response. This MOOSE RACING kit replaces worn bushings with dyno-tested components that outlast OEM parts by a significant...04500144- SKU:
- 04500144
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- INNER BUSHING INSIDE DIAMETER METRIC:
- 41.90 MM
- UNITS:
- KIT
- PRODUCT NAME:
- BUSHING KIT
- INNER BUSHING WIDTH IMPERIAL:
- 0.79'
- INNER BUSHING OUTSIDE DIAMETER IMPERIAL:
- 1.72'
- MATERIAL:
- PTFE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FORK
$57.95 -
UFO Fork Tube Protectors - White - RM - '99-'03 SU03905041
UFO
$34.95Fork tube protectors shield your suspension from debris, UV damage, and minor impacts that accumulate during aggressive riding and track use. These white protectors maintain the factory appearance of your RM while extending the service life of your fork...1271229- SKU:
- 1271229
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
$34.95 -
SDI Free Piston Assembly SDEFFPA-SFF
SDI
$62.95Stock plastic pistons are a known weak point in high-demand applications—they flex under pressure, wear prematurely, and can fail catastrophically when you need reliability most. The SDI Free Piston Assembly SDEFFPA-SFF replaces that liability with a...04500596- SKU:
- 04500596
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Fork Preload Spacer - 2.5 mm SDEFSP25-25
SDI
$6.95Fine-tuning your suspension geometry shouldn't require a complete fork disassembly. The SDI Fork Preload Spacer delivers precise 2.5 mm preload adjustment on twin-chamber forks with a simple bolt-on installation, giving you repeatable, predictable...04500606- SKU:
- 04500606
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$6.95Qty in Cart: 0Quantity:Price:$6.95Subtotal: -
SDI DU Piston Bushing Conversion Kit - 46 mm DRPBK-KYB46
SDI
$19.95Stock piston rings wear significantly within the first five hours of use, leading to degraded damping performance and increased friction. The SDI DU Piston Bushing Conversion Kit replaces your wear band with a low-friction design that maintains...04500614- SKU:
- 04500614
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
SDI Fork Service Kit - 49 mm SFSK49
SDI
$83.95Proper fork maintenance is critical to maintaining responsive handling, consistent damping performance, and extending the life of your suspension. The SDI Fork Service Kit for 49 mm forks provides all necessary components in one package, eliminating the...04500631- SKU:
- 04500631
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$83.95 -
SDI Fork Service Kit - 35 mm WFSK35-SKF
SDI
$99.95Proper fork maintenance is essential to maintaining your suspension's responsiveness, damping characteristics, and longevity. This comprehensive service kit contains every seal, fluid, and component you need to refresh your 35mm forks without sourcing...04500633- SKU:
- 04500633
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
MOOSE OFFROAD Fork Bushing Kit 38-6157
MOOSE OFFROAD
$42.95Fork bushings wear down with every ride, degrading suspension response and creating play in your forks that compromises handling and safety. The MOOSE OFFROAD Fork Bushing Kit 38-6157 replaces worn bushings with dyno-tested components engineered to...04500587- SKU:
- 04500587
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$42.95 -
MOOSE RACING Fork Springs - 43.5 mm - 3.8 n/mm 0405-1141
MOOSE RACING
$109.95Moose Racing fork springs deliver consistent, predictable suspension performance through precision engineering and rigorous quality control. Built to DIN2095 Grade 1 standards with premium chrome silicone wire, these springs maintain their rate integrity...04051141- SKU:
- 04051141
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
$109.95 -
MOOSE RACING Fork Springs - 45 mm - 4.8 n/mm 0405-1152
MOOSE RACING
$109.95Properly-valved fork springs are critical to suspension geometry and handling consistency—especially under load and during aggressive riding. Moose Racing fork springs are engineered with precision manufacturing processes and premium materials to deliver...04051152- SKU:
- 04051152
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
$109.95 -
MOOSE RACING Fork Springs - 45 mm - 5.0 n/mm 0405-1153
MOOSE RACING
$109.95Moose Racing fork springs deliver consistent, predictable suspension response by maintaining precise spring rates throughout your riding conditions. Built to DIN2095 Grade 1 standards with chrome silicone wire and multi-stage heat treatment, these...04051153- SKU:
- 04051153
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
$109.95 -
MOOSE RACING Fork Springs - 43.5 mm - 4.2 n/mm 0405-1168
MOOSE RACING
$109.95Moose Racing fork springs deliver consistent, predictable suspension performance through precision engineering and rigorous quality control. Built from premium chrome silicone wire and processed through multiple heat-treatment stages, these springs...04051168- SKU:
- 04051168
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
$109.95 -
MOOSE RACING Fork Springs - 43.5 mm - 4.8 n/mm 0405-1171
MOOSE RACING
$109.95Fork springs are critical to suspension performance—they directly affect your bike's handling precision, comfort, and consistency across varying track and road conditions. MOOSE Racing fork springs deliver the responsive, predictable performance you need...04051171- SKU:
- 04051171
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
$109.95 -
MOOSE RACING Fork Springs - 42.5 mm - 4.4 n/mm 0405-1189
MOOSE RACING
$109.95Moose Racing fork springs deliver consistent damping performance and predictable feel across your suspension travel, critical for maintaining chassis balance during aggressive riding or racing. Built to DIN2095 Grade 1 specifications with premium chrome...04051189- SKU:
- 04051189
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
$109.95Qty in Cart: 0Quantity:Price:$109.95Subtotal: -
MOOSE RACING Fork Oil Seal Kit - 39 mm 56-165
MOOSE RACING
$49.95Fork seals are a critical wear item that directly impact suspension performance and reliability. A degraded seal allows oil to seep past, compromising damping characteristics and reducing fork stiffness when you need it most. The MOOSE RACING Fork Oil...04070701- SKU:
- 04070701
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$49.95 -
On Sale
POLISPORT Fork Guard Cover - White 8398600012
POLISPORT
MSRP: $27.49Now: $25.57Was: $27.49Fork guards are your first line of defense against impact damage, debris, and UV degradation. The POLISPORT Fork Guard Cover replaces worn or damaged OEM guards with a durable, precision-fit alternative that restores both protection and appearance. Built...04120314- SKU:
- 04120314
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $27.49Now: $25.57Was: $27.49 -
On Sale
POLISPORT Fork Guard Cover - White 8398300001
POLISPORT
MSRP: $27.49Now: $25.57Was: $27.49Fork guards absorb impacts that would otherwise damage your forks and compromise steering precision. This POLISPORT cover restores OEM protection at a fraction of replacement costs, with enhanced durability that outlasts stock plastic. Keep your front...04120320- SKU:
- 04120320
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
MSRP: $27.49Now: $25.57Was: $27.49 -
On Sale
POLISPORT Fork Guard Cover - Black 8398300002
POLISPORT
MSRP: $27.49Now: $25.57Was: $27.49Your motorcycle's fork guards take constant abuse from road debris, impacts, and UV exposure—but replacement OEM covers often come with premium price tags. The POLISPORT Fork Guard Cover delivers OEM-equivalent protection and fitment at a fraction of the...04120321- SKU:
- 04120321
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
MSRP: $27.49Now: $25.57Was: $27.49
