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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KYB Fork Cartridge Seals - Black 110210000201
KYB
$10.95Fork cartridge seals deteriorate over time, compromising suspension performance and allowing contamination into critical internal components. KYB's OE replacement seals restore proper damping function and extend fork longevity by maintaining fluid...04130033- SKU:
- 04130033
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$10.95 -
KYB Dust Seal Set - 46 mm 110024600202
KYB
$24.95Dust seals are critical components that protect your suspension's internal hydraulic systems from contamination and moisture ingress. A compromised dust seal allows dirt and water to degrade damper fluid, reducing damping performance and accelerating...04070170- SKU:
- 04070170
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$24.95 -
MOOSE OFFROAD Fork Seal Kit - 35 mm 56-157
MOOSE OFFROAD
$39.95Factory fork seals wear out quickly under aggressive riding conditions, leading to oil leakage, inconsistent damping, and premature fork failure. The MOOSE OFFROAD Fork Seal Kit replaces worn seals with a triple-lip design engineered to outlast OEM...04070356- SKU:
- 04070356
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$39.95 -
UFO Fork Tube Protectors - White - YZ YA02838-046
UFO
$29.95Fork tube protectors shield your suspension from debris, mud, and impact damage that can compromise seal integrity and performance. White OEM-matched color maintains your bike's factory appearance while adding crucial protection during aggressive trail...04120545- SKU:
- 04120545
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
$29.95 -
UFO Fork Slider Protectors - White HO03672041
UFO
$29.95Fork slider protectors are essential damage-control components that absorb impact during crashes or low-speed mishaps, preventing costly fork tube damage that can compromise suspension geometry and handling. UFO's fork sliders bolt directly to stock...1270129- SKU:
- 1270129
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
$29.95 -
WORKS CONNECTION Pro Launch Start Device - Yamaha 12-416
WORKS CONNECTION
$148.95Precision starting is non-negotiable in competitive riding, and the WORKS CONNECTION Pro Launch Start Device eliminates the variables that cost you tenths on the line. This CNC-machined system delivers consistent engagement every single time, letting you...04500225- SKU:
- 04500225
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$148.95 -
WORKS CONNECTION Pro Launch Start Device - KTM 12-631
WORKS CONNECTION
$148.95Shaving precious milliseconds off your launch requires hardware that's engineered for consistency and won't add weight to your bike. The WORKS CONNECTION Pro Launch Start Device eliminates the variables of mechanical wear and rider technique variance...04500558- SKU:
- 04500558
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$148.95 -
WORKS CONNECTION Pro Launch Start Device 12-722
WORKS CONNECTION
$148.95A reliable launch control system can be the difference between a consistent start and a missed gate. The WORKS CONNECTION Pro Launch Start Device eliminates the variables that come with manual clutch modulation, giving you repeatable, controlled...04500579- SKU:
- 04500579
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$148.95 -
On Sale
WORKS CONNECTION Pro Launch Start Device 12-800
WORKS CONNECTION
MSRP: $141.95Now: $91.00Was: $141.95Consistent launch control is the difference between winning and losing on the track. The WORKS CONNECTION Pro Launch Start Device gives you precise, repeatable engagement every single time—no springs to fatigue, no unpredictable variables. Whether you're...04500580- SKU:
- 04500580
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $141.95Now: $91.00Was: $141.95 -
WORKS CONNECTION Pro Launch Start Device 12-905
WORKS CONNECTION
$148.95A reliable launch control system is essential for consistent starts in competitive racing, where reaction time and throttle response directly impact your race result. The WORKS CONNECTION Pro Launch Start Device eliminates the variables of manual clutch...04500582- SKU:
- 04500582
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$148.95 -
SDI Free Piston Assembly - 49 mm SDEFFPA-TAC
SDI
$59.95Stock plastic pistons are a liability in high-demand applications—they lack the durability and consistency needed for reliable performance under pressure. The SDI Free Piston Assembly replaces that weak link with a purpose-built component that maintains...04500597- SKU:
- 04500597
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$59.95 -
SDI Free Piston Assembly - 49 mm SDEFFPA-TAC-SET
SDI
$110.95The SDI Free Piston Assembly upgrades your equipment with a metal construction that outlasts standard plastic alternatives, delivering superior durability under demanding conditions. Pre-assembled with all necessary bushings, o-rings, and seals, this...04500598- SKU:
- 04500598
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$110.95 -
SDI Free Piston Assembly - 48 mm SDEFFPA09
SDI
$62.95The SDI Free Piston Assembly is engineered to deliver superior durability and reliability where plastic alternatives fail under sustained load. This 48 mm unit arrives fully assembled and ready to bolt in, reducing downtime while maintaining full...04500599- SKU:
- 04500599
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
SDI Free Piston Assembly - 48 mm SDEFFPA09-SET
SDI
$110.95If you're running a forced induction system or air suspension setup, your piston assembly experiences extreme pressure cycles that demand metal-to-metal construction and precision engineering. The SDI Free Piston Assembly replaces inferior plastic...04500600- SKU:
- 04500600
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$110.95 -
SDI Fork Preload Spacer - 5 mm SDEFSP05
SDI
$6.95Fine-tuning your suspension geometry shouldn't require a complete fork disassembly. The SDI Fork Preload Spacer gives you quick, repeatable preload adjustments on twin-chamber forks without breaking down your entire suspension setup. Whether you're...04500601- SKU:
- 04500601
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$6.95 -
SDI Fork Preload Spacer - 10 mm SDEFSP10
SDI
$5.95Adjusting fork preload shouldn't require specialized tools or professional intervention—the SDI Fork Preload Spacer gives you precise control over suspension stiffness with a simple, bolt-on installation. Whether you're fine-tuning for track conditions...04500602- SKU:
- 04500602
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$5.95 -
SDI Fork Preload Spacer - 2.5 mm SDEFSP25
SDI
$6.95Fork preload directly affects your suspension's initial spring rate and ride height—get it wrong, and you're fighting poor handling and premature wear. The SDI Fork Preload Spacer gives you the precision adjustment needed to dial in your twin chamber...04500603- SKU:
- 04500603
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$6.95 -
SDI Fork Preload Spacer - 5 mm SDEFSP25-05
SDI
$5.95Twin chamber forks demand precise preload adjustment to dial in the perfect ride height and spring rate for your specific setup. The SDI Fork Preload Spacer eliminates guesswork and eliminates the need for expensive machine shop work—simply stack spacers...04500604- SKU:
- 04500604
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$5.95 -
SDI Fork Preload Spacer - 10 mm SDEFSP25-10
SDI
$6.95Adjusting fork preload shouldn't require special tools or disassembly of your suspension. The SDI Fork Preload Spacer gives you precise, repeatable preload adjustments on twin-chamber forks with a simple bolt-on installation. Fine-tune your suspension's...04500605- SKU:
- 04500605
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$6.95 -
SDI Spring Perch Set - CRF SDETCV23SET
SDI
$144.95If you're running a CRF and hitting the limits of stock suspension geometry, this spring perch set transforms how your bike handles deep compressions and aggressive riding. By allowing you to dial in ride height and spring preload independently, you'll...04500607- SKU:
- 04500607
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$144.95
