Your cart is empty
Start ShoppingCOMETIC C9130 Evo Big Twin EST Gasket Kit - High-Performance Gasket Kit for Motorcycle Engines
Fits your
May not fit your
Description
Upgrade your motorcycle's engine performance with the COMETIC C9130 Evo Big Twin EST Gasket Kit. Engineered for precision fitment and long-lasting reliability, this high-performance gasket kit ensures optimal sealing and peak engine efficiency for your Big Twin EST motorcycle.
Key Features
- High-Performance Material Construction: Made from advanced composite materials for superior sealing and heat resistance.
- Precision Engineered Fitment: Perfectly designed for Evo Big Twin EST engines to eliminate leaks and ensure proper compression.
- Compatibility with Evo Big Twin EST Engines: Specifically crafted for seamless installation and optimal performance on targeted models.
- Durable and Long-Lasting Design: Built to withstand extreme temperatures and pressures for extended service life.
Why Choose This Product
Upgrade your engine's sealing integrity with a gasket kit that combines precision engineering with durable materials. This product ensures reliable performance, prevents costly leaks, and maintains engine efficiency, making it an essential upgrade for motorcycle enthusiasts seeking peak performance and longevity.
Delivery
Checking availability...
Estimated arrival
Order within to ship today
Orders ship
Shipping to
Enter your ZIP code for delivery estimate
Price Match Guarantee
Found it cheaper?
Log in to submit a price match request.
Price
Quantity
Free Shipping $100+
14-Day Returns
Secure Checkout
Price Match
Complete the Build
This item
$93.99
In Cart
Upgrade your motorcycle's engine performance with the COMETIC C9130 Evo Big Twin EST Gasket Kit. Engineered for precision fitment and long-lasting reliability, this high-performance gasket kit ensures optimal sealing and peak engine efficiency for your Big Twin EST motorcycle.
Key Features
- High-Performance Material Construction: Made from advanced composite materials for superior sealing and heat resistance.
- Precision Engineered Fitment: Perfectly designed for Evo Big Twin EST engines to eliminate leaks and ensure proper compression.
- Compatibility with Evo Big Twin EST Engines: Specifically crafted for seamless installation and optimal performance on targeted models.
- Durable and Long-Lasting Design: Built to withstand extreme temperatures and pressures for extended service life.
Why Choose This Product
Upgrade your engine's sealing integrity with a gasket kit that combines precision engineering with durable materials. This product ensures reliable performance, prevents costly leaks, and maintains engine efficiency, making it an essential upgrade for motorcycle enthusiasts seeking peak performance and longevity.
| SKU | GM990D86A6 |
|---|---|
| MPN | C9130 |
| Brand | Cometic |
| Category | Gaskets/Seals |
0.0
0 reviews
0
Log in to write a review.
Reviews
No reviews yet. Be the first to review this product!
Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Evo Big Twin (Evolution) models including Softail, Dyna, and Touring | 1986-1999 |
| Harley-Davidson | FXR, FLT, FLH, FXST, FXD series | 1986-1999 |
Frequently Asked Questions
Fits 1986-1999 Harley-Davidson Evolution Big Twin engines (80ci) including Softail (FXST), Dyna (FXD), Touring (FLT/FLH), and FXR models at stock 4.000" bore.
No, C9130 is for stock bore 4.000". For big bore/stroker, see Cometic C9131 or custom kits.
Yes, complete top-end kit with MLS head gaskets, base gaskets, O-rings, and all seals.
Yes, compatible with most aftermarket Evo heads as long as bore matches.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- feeler gauges
- engine hoist or stand
Pro Tips
- Apply thin layer of assembly lube to bearings/cams
- Torque head bolts in crisscross pattern to spec (typically 95-105 ft-lbs)
- Change engine oil after first heat cycle
Common Mistakes to Avoid
- Not cleaning mating surfaces thoroughly
- Incorrect torque sequence on head bolts
- Reusing old bolts
Comparison vs Stock/OEM
Multi-layer steel construction vs. stock composite/paper gaskets
Improvements
- Superior sealing under high compression/pressure
- Better heat resistance
- Allows higher compression ratios
- Longer service life
Considerations
- Higher cost than OEM
- Requires precise installation
Durability & Warranty
Expected Lifespan
50,000+ miles with proper torque/install
Warranty
1 year manufacturer defect warranty
Maintenance
Retorque head bolts after 500 miles initial run-in; inspect during valve adjustments
What Others Are Saying
Reviews from across the web
