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Manley Performance Manley Ford GT350 Voodoo 5.2L Race Master Series Exhaust Valve Set - 1.280in Dia
Manley Performance Manley Ford GT350 Voodoo 5.2L Race Master Series Exhaust Valve Set - 1.280in Dia
Manley Performance Manley Ford GT350 Voodoo 5.2L Race Master Series Exhaust Valve Set - 1.280in Dia
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Manley Ford GT350 Voodoo 5.2L Race Master Series Exhaust Valve Set - 1.280in Dia

MAN12631-8
807298121130
Valves
10 Units In Stock - Ships Next Business Day
$ 270.06 $ 202.55
$ 202.55

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

Request For Information

Have questions about Manley Ford GT350 Voodoo 5.2L Race Master Series Exhaust Valve Set - 1.280in Dia? Fill out the form below and we'll get back to you by the next business day.
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