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Description
Pacemaker | Tuned Design Exhaust Headers | Chrysler Valiant AP5-VF Slant Six | PH2500 KitPacemaker Tuned Design Exhaust Headers Chrysler Valiant AP5 VF Slant Six PH2500 Kit Unlock the performance potential of your iconic Mopar 225 with these premium Pacemaker Tuned exhaust headers. Engineered specifically for Chrysler Valiant models from AP5 through to VF fitted with the Slant Six engine, these headers are designed to significantly improve exhaust flow and engine breathing. The Tuned design ensures balanced exhaust pulses, providing a
Pacemaker Tuned Design Exhaust Headers - Chrysler Valiant AP5-VF Slant Six - PH2500 Kit
Unlock the performance potential of your iconic Mopar 225 with these premium Pacemaker Tuned exhaust headers. Engineered specifically for Chrysler Valiant models from AP5 through to VF fitted with the Slant Six engine, these headers are designed to significantly improve exhaust flow and engine breathing. The Tuned design ensures balanced exhaust pulses, providing a noticeable increase in power and a smoother torque curve, making it an essential upgrade for any classic Valiant enthusiast.
Features:
This product offers the following high-performance features:
- Tuned Header Design: Precision-engineered pipe lengths to optimize exhaust scavenging and improve overall engine efficiency.
- Carburetor Compatibility: Specifically designed to clear performance intake setups, including multi-carburetor and Triple Weber configurations.
- High-Quality Construction: Features 1½" (38mm) primary pipes and 2" (51mm) secondary pipes leading to a 2¼" (57mm) outlet.
- Versatile Fitment: Engineered to clear Power Steering systems and fits both Manual and Automatic transmission models.
Product Specifications for PH2500 Kit
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH2500 | Gasket | DSF 5 |
| P/Steering | Yes | Primary Pipe | 1½" (38mm) |
| Air Con | No | Secondary Pipe | 2" (51mm) |
| Oxy Sen | N/A | Outlet | 2¼" (57mm) |
| Fitting Time | 2 Hrs | Design | TUNED |
Important Notes:
- Carburetor Fitment: These headers are compatible with multi-carburetor setups and Triple Weber intake manifolds.
- Transmission: Suitable for both Manual and Automatic transmission vehicles.
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| Chrysler | Valiant | 1963 | 1970 | Sedan / Wagon / Ute | AP5-AP6-VC-VE-VF | 225 Slant Six | Manual & Auto | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Headers | Two (2) years. |
| Pacemaker King Brown 4x4 Exhaust systems | Five (5) years. |
| Pacemaker Sports exhaust systems | Five (5) years. |
| Fabrication products and accessories | One (1) year. |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 3
Cheaply made but functional
Color: Black
Pros:
The headrest is highly adjustable. Even if you're tall you'll likely be able to tilt it so that you can rest your head on it while reclining.
The instructions for putting it together are easy to follow.
It's perfectly serviceable as a desk chair with no glaring defects.
The mesh material keeps your body cool and dry even when sitting in it all day.
Cons
It's obviously very lightweight and cheaply made. This does make the chair easier to move, but this doesn't really feel like a $180 chair at all. More like a $120 or even $100 chair.
The chair back is attached to the chair seat by a plastic bracket. Nearly every desk chair I've had in the past has had their back attached to the bottom with a metal bracket, and even those start to bend out of shape after a year or so. While reclining a good portion of your weight will be resting on this plastic bracket, and I simply cannot see this cheap plastic lasting for very long supporting anyone's body weight over a long period of time. If you buy this chair, make sure to get the warranty.
The armrests are closer together than on most chairs, which creates a claustrophobic feeling of being squeezed by them. You get used to it eventually, and you can just put the armrests up if you want to, but a way to adjust the armrest width would have been nice.
The lumbar support doesn't really do anything at all. It only presses against my back at the most intense setting, and even then not very much.
There is no incremental recline setting. Either you are fully reclined, or sitting fully upright. Luckily the full recline setting is about perfect for me, but for a $180 chair you'd expect a bit more settings here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 5
Great Chair
Color: Black
Very comfortable chair! I’m a big guy - 6’ 2”, 285 lbs. and it fits me perfectly. The head rest is a nice touch and I appreciate it more than I thought I would. Lumbar support is in just the right position and is adjustable (more support vs. less support). It does adjust up and down but not very much. Was also super simple to put together although I did have to crank on the screws that attach the back of the arm rest to the back of the chair. If you’re looking for a place to plant your butt for 8 hours, this is your chair.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great product
Color: Dark Black
Easy to assemble and very good quality
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Reviewed in the United States on May 6, 2026
★★★★★ 1
DO NOT BUY! DO NOT BUY! DO NOT BUY!
Color: Black, Color: Black
Absolute garbage chair. Only had for six month and the mesh on the seat has already come apart after using it for my home office. Chair was squaking after only three months and now I can't even sit in it cause it sags.
Can't even get my money back for this cheap garbage.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Just What I Needed for My Home Office
Color: Black
I’ve been very happy with this office chair. It was straightforward to assemble, feels sturdy, and offers excellent support for long hours at my desk.
The adjustable lumbar support, armrests, and headrest make it easy to customize for a comfortable fit, and the mesh design helps keep the chair breathable throughout the day.
Overall, this chair is comfortable, ergonomic, and a great value for a home office setup.
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Reviewed in the United States on May 21, 2026
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