Steel Exhaust Valve
Race Use Only Product – Not intended for street use – Please check details on the “Race use only” footer’s section
Description
Athena’s exhaust valves for motocross and enduro motorcycles are engineered to deliver long-lasting performance and durability under extreme conditions. Manufactured to match OEM specifications and tolerances, they are the ideal replacement for riders seeking high-quality components with hassle-free installation.
Fully compatible with original valve train components
Athena valves are direct replacements for OEM parts and can be installed without modifying valve springs, seals, retainers, or cotters. This ensures easy installation and preserves the original valve train dynamics.
OEM-grade materials for consistent performance
Each valve is made from the same material specified by the original manufacturer—either steel or titanium—to maintain correct weight, balance, and spring load. This guarantees proper function and long service life, even under high RPM and thermal stress.
Offroad-proven reliability
Backed by Athena’s racing experience and partnerships with factory teams in MXGP, AMA Supercross, and EnduroGP, these valves are built to withstand the harshest offroad environments while delivering consistent performance and reliability.
Bullet points
Compatible with OEM springs and valve train parts
Made from OEM-specified steel or titanium
Easy installation with no modifications required
Proven reliability in extreme offroad conditions
Technical features
| Material | Steel |
| Net Weight (Kg) | 0.04 |
| Valve Type | Exhaust |
OEM Codes
| Partner | OEM code |
|---|---|
| HONDA | 14721MENA30 |
- Manufacturer: ATHENA
- Net Weight (Kg): 0.06
- Oil Seal Total Height (mm): 11.00
- Oil Seal External Diameter (mm): 54.00
- Net Weight (Kg): 0.40
- Manufacturer: SKF
- Net Weight (Kg): 0.05
- Oil Seal Total Height (mm): 9.00
- Dust Seal Total Height (mm): 4.90
- Manufacturer: ATHENA
- Net Weight (Kg): 0.06
- Oil Seal Total Height (mm): 10.50
- Oil Seal External Diameter (mm): 53.00
- Manufacturer: ATHENA
- Net Weight (Kg): 0.05
- Oil Seal Total Height (mm): 10.50
- Oil Seal External Diameter (mm): 52.00
- Manufacturer: ATHENA
- Net Weight (Kg): 0.05
- Oil Seal Total Height (mm): 9.50
- Oil Seal External Diameter (mm): 53.00
- Manufacturer: ATHENA
- Net Weight (Kg): 0.06
- Oil Seal Total Height (mm): 11.00
- Oil Seal External Diameter (mm): 50.00
Poland 