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SKU: 12631-8 | UPC: 807298121130
Manley Race Master Series Exhaust Valve Set 1.280" 2016-2020 Ford Mustang GT350 Voodoo 5.2L (8pcs)
The Manley 12631-8 Race Master Series Exhaust Valve Set delivers high exhaust flow and long-lasting performance for 2016-2020 Ford Mustang GT350 and GT350R models with the 5.2L Voodoo V8 engine. These precision-machined 1.280in diameter stainless steel valves feature swirl-polished stems and hardened tips to handle high-RPM track or race conditions in naturally aspirated or boosted setups. Built for reliability this set supports aggressive builds pushing Voodoo engine limits.
Key Features
- 1.280" Head Diameter: Matches engine porting for high exhaust flow and power gains
- Premium Stainless Steel: Resists high heat and fatigue in demanding race environments
- Swirl-Polished Stems: Minimizes friction and guides smoother airflow through the head
- Fully Machined Combustion Face: Ensures tight sealing and efficient combustion chamber flow
- Hardened Tip Ends: Resists wear from high-lift cams and extended valve travel
Product Notes
- Race Master Series valves suit high-RPM and high-performance race applications
- Sold as complete set of 8 for full cylinder head replacement
- Pair with matching intake valves springs and retainers for best results
Installation Notes
- Professional installation recommended.
- Requires cylinder head removal valve job and proper seating
- Use with compatible high-performance valve springs retainers and seals
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2020 | Ford | Mustang | GT350 / GT350R (5.2L Voodoo V8) |
Why Choose Manley?
- Proven reliability in motorsport racing worldwide
- One-piece forged stainless steel construction for strength
- Precision engineering from USA manufacturing
Frequently Asked Questions
-
Q: Does this fit 2018 Mustang GT350?
A: Yes 12631-8 fits all 2016-2020 Ford Mustang GT350 and GT350R with 5.2L Voodoo V8. -
Q: What material are these valves?
A: Premium 410 stainless steel with swirl-polished stems and hardened tips for heat resistance. -
Q: Is pro installation needed?
A: Yes requires head work valve job and valvetrain setup by experienced engine builder.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure retail box
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