Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM
- Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
- Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
- Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
- Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine’s specific requirements.
- Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
| Product Market |
Sport Compact |
|---|---|
| Head Diameter |
28.00 MM |
| Stem Diameter |
0.2362, 6.00 MM |
| O/A Length |
101.52 MM |
| Tip Length |
3.50 MM |
| Margin Width |
0.065 IN |
| Seat Width |
0.080 IN |
| Top Of Head |
20 Degree Dish |
| Underhead Angle |
25.00 DEG |
| Underhead Radius |
11/32 IN |
| Valve Series |
Race Series |
| Valve Type |
Exhaust |
| Product Type |
Engine Exhaust Valve Kit |
| Valve Quantity |
8 |
| Engine Detail – Web |
1.8L BP |
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1994-1997,1999-2005 | Mazda | Miata | Base |
| 2000-2005 | Mazda | Miata | LS |