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Start ShoppingProX Fork Seal & Wiper Kit - OEM Replacement for Kayaba/Showa Inverted Forks
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Description
Upgrade your motorcycle's suspension performance with ProX's premium fork seal and wiper kit. This complete replacement set restores critical sealing integrity to inverted cartridge forks, ensuring optimal fork action and protection against mud, water, and UV degradation in extreme off-road conditions.
Key Features
- Double-Lip Oil Seals: Advanced sealing design prevents fork oil leakage while maintaining smooth damping response
- Low-Friction Sealing Lip: Reduces drag for faster fork compression/rebound travel
- OEM-Dimensional Precision: Exact fit for Kayaba/Showa inverted forks with minimal installation adjustments
- UV-Resistant NBR Compound: Maintains flexibility and durability in harsh outdoor environments
- Reinforced Metal Ring: Enhances seal longevity and resistance to abrasive contaminants
Why Choose This Product
ProX's fork seal kit combines OEM-level precision with durable materials engineered for motocross and enduro riders. The dual-seal configuration protects both oil and dust pathways, while the proprietary rubber compound resists degradation from fork oil, mud, and UV exposure. This pair-set design simplifies maintenance for inverted forks, ensuring consistent suspension performance across demanding off-road terrain.
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Upgrade your motorcycle's suspension performance with ProX's premium fork seal and wiper kit. This complete replacement set restores critical sealing integrity to inverted cartridge forks, ensuring optimal fork action and protection against mud, water, and UV degradation in extreme off-road conditions.
Key Features
- Double-Lip Oil Seals: Advanced sealing design prevents fork oil leakage while maintaining smooth damping response
- Low-Friction Sealing Lip: Reduces drag for faster fork compression/rebound travel
- OEM-Dimensional Precision: Exact fit for Kayaba/Showa inverted forks with minimal installation adjustments
- UV-Resistant NBR Compound: Maintains flexibility and durability in harsh outdoor environments
- Reinforced Metal Ring: Enhances seal longevity and resistance to abrasive contaminants
Why Choose This Product
ProX's fork seal kit combines OEM-level precision with durable materials engineered for motocross and enduro riders. The dual-seal configuration protects both oil and dust pathways, while the proprietary rubber compound resists degradation from fork oil, mud, and UV exposure. This pair-set design simplifies maintenance for inverted forks, ensuring consistent suspension performance across demanding off-road terrain.| SKU | GM1239CDF1 |
|---|---|
| MPN | 40.S334611P |
| Brand | ProX |
| Category | Suspension |
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Frequently Asked Questions
Yes. ProX fork seal/wiper kits are sold as a complete set for one front fork assembly: two oil seals and two dust/wiper seals.
You’ll need general hand tools plus a way to hold the fork and a correctly sized fork seal driver (or a safe substitute such as split PVC pipe of the right diameter). A torque wrench is strongly recommended.
You technically could, but it is not recommended. Any time the forks are disassembled to replace seals, you should drain and refill with fresh fork oil to the manufacturer’s specified level.
ProX designs its kits to match or exceed OEM quality, with low‑friction sealing lips and high‑quality rubber compounds. Many riders use them as an OEM‑equivalent or mild upgrade alternative.
No special break‑in is needed. After installation, cycle the forks several times before riding and re‑check for leaks. Normal riding will fully seat the seals.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 30 min
Tools Required
- Motorcycle stand or lift
- Metric socket set and ratchet
- Allen/hex keys (for triple clamps, axle pinch bolts, etc.)
- Torque wrench
- Soft-jaw vice or fork holding tool
- Fork cap wrench (size depends on fork model)
- Seal driver sized to fork tube (or split PVC pipe of correct diameter)
- Small flat screwdriver or seal puller (for old seals – use carefully)
- Pick tool (for removing old retaining clips)
- Measuring cup or fork oil level tool
- Fork oil (correct weight and volume for the specific bike)
- Shop rags and brake/contact cleaner
Pro Tips
- Wrap a thin layer of tape or use a plastic installation “bullet” over the fork tube’s sharp edges where the seal passes to protect the new seal lip.
- Lightly coat the inner lip of both the oil and dust seals with fresh fork oil before installation.
- Clean and polish the fork tube’s sliding surface thoroughly; remove any rust spots or burrs with very fine Scotch‑Brite before installing new seals.
- Always replace both sides at the same time and inspect bushings; worn bushings will quickly destroy new seals.
- After assembly, pump the forks a few times before riding to distribute oil and confirm there are no leaks.
Common Mistakes to Avoid
- Driving in seals without using a proper driver, causing lip damage or cocked seals
- Forgetting the fork seal retaining clip before installing the new seal
- Nicking the new seal lip on the sharp edges of the fork tube (bushing grooves, snap‑ring groove) during installation
- Incorrect fork oil level or viscosity, causing harsh or inconsistent suspension
- Over‑tightening triple clamp pinch bolts, which can bind the fork tubes
- Not aligning/squaring the front axle and pinch bolts before final tightening, which can cause stiction
Comparison vs Stock/OEM
Designed as an OEM‑equivalent or better direct replacement for original fork oil and dust seals, with OEM‑style dimensions for proper fit.
Improvements
- Low‑friction sealing lip profile can provide slightly smoother initial fork movement compared to some OEM seals.
- High‑quality rubber compounds and double‑lip design aim to improve sealing against dirt and oil leakage.
- Cost‑effective alternative to OEM while maintaining performance and reliability.
Considerations
- Performance and longevity will still depend heavily on fork tube condition and bushing wear.
- Always verify cross‑reference and dimensions against OEM part numbers for the specific bike before ordering.
Durability & Warranty
Expected Lifespan
Highly dependent on riding conditions; on a well‑maintained MX/enduro bike used in mixed conditions, riders commonly expect 1–2 seasons before service, less in extreme mud/sand and more in light trail use.
Warranty
Typical ProX practice is a standard manufacturer defect warranty via the retailer; coverage and terms vary by seller.
Maintenance
['Keep fork tubes clean; wipe off mud and grit after rides.', 'Avoid using pressure washers directly at the seals.', 'Inspect regularly for oil seepage and pitting on tubes; address issues early to prevent accelerated seal wear.']
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