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Start ShoppingATHENA R4856-118 Race Gasket Kit - High-Performance MLS Head Gasket for Racing Applications
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Description
Elevate your racing engine's reliability with the ATHENA R4856-118 Race Gasket Kit, engineered for extreme performance and longevity. This premium gasket set delivers unmatched sealing integrity under high compression and heat, ensuring peak engine efficiency during competition.
Key Features
- Reinforced Multi-Layer Steel (MLS) Head Gasket: Constructed with advanced MLS technology for superior sealing under extreme pressure and temperature conditions.
- Nickel-Reinforced Cylinder Base Gasket: Enhanced durability and heat resistance to withstand high-performance engine stress.
- High-Temperature Silicone Valve Cover Gasket: Resists thermal degradation, maintaining airtight seals in demanding racing environments.
- Complete Kit Compatibility: Includes all essential gaskets (cylinder head, base, exhaust, valve cover) for seamless installation.
Why Choose This Product
Whether you're competing in drag racing, circle track, or endurance events, this gasket kit is designed to outperform standard options. The combination of MLS construction, nickel reinforcement, and silicone durability ensures minimal compression leaks, reduced engine overheating risks, and consistent power delivery. Perfect for modifying high-compression engines while maintaining OEM-level sealing reliability.
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Elevate your racing engine's reliability with the ATHENA R4856-118 Race Gasket Kit, engineered for extreme performance and longevity. This premium gasket set delivers unmatched sealing integrity under high compression and heat, ensuring peak engine efficiency during competition.
Key Features
- Reinforced Multi-Layer Steel (MLS) Head Gasket: Constructed with advanced MLS technology for superior sealing under extreme pressure and temperature conditions.
- Nickel-Reinforced Cylinder Base Gasket: Enhanced durability and heat resistance to withstand high-performance engine stress.
- High-Temperature Silicone Valve Cover Gasket: Resists thermal degradation, maintaining airtight seals in demanding racing environments.
- Complete Kit Compatibility: Includes all essential gaskets (cylinder head, base, exhaust, valve cover) for seamless installation.
Why Choose This Product
Whether you're competing in drag racing, circle track, or endurance events, this gasket kit is designed to outperform standard options. The combination of MLS construction, nickel reinforcement, and silicone durability ensures minimal compression leaks, reduced engine overheating risks, and consistent power delivery. Perfect for modifying high-compression engines while maintaining OEM-level sealing reliability.| SKU | GM3F337C05 |
|---|---|
| MPN | R4856-118 |
| Brand | Athena |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| KTM | 450 SX-F | 2019-2024 |
| KTM | 450 EXC-F | 2019-2024 |
| Husqvarna | FC 450 | 2019-2024 |
| Husqvarna | FE 450 | 2019-2024 |
Frequently Asked Questions
Yes, designed as direct replacement for stock gaskets but optimized for high-performance/race applications.
Yes, complete kit includes cylinder head, base, exhaust, and valve cover gaskets.
4-stroke engines only - specifically 450cc class KTM/Husqvarna models.
Yes, commonly used with Athena big bore kits and other performance cylinders of same bore size.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 30 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- engine assembly lube
- feeler gauges
Pro Tips
- Use gasket remover spray and plastic scraper to avoid damaging surfaces
- Follow manufacturer torque specs exactly - typically 3-stage torquing
- Apply thin layer of assembly lube to cylinder studs
Common Mistakes to Avoid
- Not cleaning mating surfaces thoroughly
- Incorrect torque sequence on head bolts
- Overlooking O-ring installation on base gasket
Comparison vs Stock/OEM
Athena Race kit uses multi-layer steel (MLS) head gasket vs stock single-layer composite
Improvements
- Higher compression sealing capability
- Better heat resistance for race engines
- Reduced gasket blowout under high cylinder pressure
Considerations
- Requires precise torque specs
- Not reversible - race compound only
Durability & Warranty
Expected Lifespan
Full engine rebuild interval (40-100 hours racing)
Warranty
1 year manufacturer defect warranty
Maintenance
Inspect during valve service intervals, replace with every major engine work
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