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SKU: 12331-8 | UPC: 807298079288
Manley 2011+ Chrysler/Dodge 6.4L Hemi w/ Triple Groove (1.654) Race Master Exhaust Valves (Set of 8)
Manley Race Series exhaust valves deliver reliable performance for 2011 and newer Chrysler Dodge and Jeep models equipped with the 6.4L HEMI engine. This set of 8 features a 1.654 inch head diameter and triple groove design built to handle the stresses of bracket drag oval track and high RPM operation up to 8000 RPM. Precision construction ensures consistent exhaust flow and durability in demanding race conditions.
Key Features
- Inconel XH428 Material: High nickel content alloy resists extreme exhaust gas temperatures over 1600 degrees F for long lasting strength in race applications
- Triple Valve Lock Grooves: Provides secure keeper retention preventing valve loss at elevated engine speeds
- Swirl Polished Heads: Enhances exhaust gas evacuation reduces turbulence and supports higher horsepower output
- Bead Blasted Stems: Minimizes guide friction improves heat transfer and extends valve life under high load
- 1.654 Inch Head Diameter: Matches OEM exhaust port sizing while increasing flow capacity for 6.4L HEMI cylinder heads
Product Notes
- Valve specs include 1.654 inch head diameter 0.3725 inch stem diameter and 4.880 inch overall length
- Pair with compatible valve springs and retainers for full race setup
- Packaged in protective case for safe handling and storage
Installation Notes
- Professional installation recommended.
- Verify valve to piston clearance especially with aftermarket cams or pistons
- Compatible with multi-layer steel head gaskets and stock or ported 6.4L HEMI heads
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2023 | Dodge | Challenger | R/T 6.4L |
| 2011-2023 | Dodge | Charger | R/T 6.4L |
| 2012-2023 | Chrysler | 300 | SRT8 6.4L |
| 2014-2023 | Dodge | Durango | R/T 6.4L |
| 2012-2021 | Jeep | Grand Cherokee | SRT8 6.4L |
| 2014-2023 | Ram | 2500 | 6.4L |
| 2014-2023 | Ram | 3500 | 6.4L |
Why Choose Manley?
- Decades of experience supplying valves to championship winning race teams
- Every valve undergoes rigorous quality checks for dimensional accuracy
- Advanced metallurgy tailored specifically for high performance HEMI engines
Frequently Asked Questions
-
Q: Will these valves fit 2015 and newer 6.4L HEMI models in Dodge Challenger R/T?
A: Yes they directly replace OEM exhaust valves in 2011-2023 6.4L HEMI equipped Challenger R/T Charger R/T and similar models with matching head design -
Q: What material are these exhaust valves made from?
A: Constructed from Inconel XH428 a nickel chromium alloy engineered for superior heat resistance in exhaust ports handling over 1600 degrees F -
Q: What is the warranty on these valves?
A: Manley provides a limited warranty against manufacturing defects when installed and used per recommendations
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed 8 x 6 x 2 inches
- Weight: 1.80 lbs
Manley Performance
Founded in 1966 by Hank Manley, Manley Performance Products has become one of the most respected names in high-performance engine components. Originally launched as Manley Speed Equipment, the company quickly earned a reputation for precision manufacturing, durability, and race-proven performance. From grassroots beginnings in New Jersey to global recognition in professional motorsports, Manley Performance continues to set the standard in high-performance automotive parts. Manley Performance Engine Parts Manley is known for manufacturing premium internal engine components designed for street, strip, and professional racing applications. Their product line includes: Manley stainless steel valves Manley forged pistons Manley connecting rods (H-Beam, I-Beam, Turbo Tuff, Pro Series) Manley camshafts Manley crankshafts Manley valvetrain components Valve springs, retainers, and hardware Every Manley component is engineered with strict quality control and race-driven innov...
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