Walton Motorsport Nissan SR20 OEM Bottom Mount Manifold

If you require a stock fitment manifold that is fit and forget? The Walton Motorsport SR20 Bottom mount Manifold is designed to be a bolt-on direct OEM replacement. Just as compatible as the OEM Manifold. Including S15 ABS Units

There's no shortage of Nissan SR20 exhaust manifolds available. The construction methods we use set our product apart from the rivals.

Nissan SR20 OEM Bottom Mount Exhaust Manifold Construction

Material Selection

• First and foremost not all 304 Stainless steel is created equal. We carefully select the exact specification of the tube that we use. The use of poor quality tube can compromise the whole design. For Instance, exhaust manifolds experience repeated high-temperature cycles. In these situations, we have seen poor tubing split along the seam.
  
• We design the head flanges inhouse. However, we outsource the precision Fiber Laser Cutting. The use of more modern Fiber Laser cutting allows for increased accuracy over traditional laser cutting
  

Processes

• Where the manifold meets the exhaust ports, Walton Motorsports process is to push the tubing through the head flange and TIG weld each side. This process is followed by a selection of finishing tools. We do this to create a smooth port for the gasses to freely flow through. Consequently, this process greatly increases the durability of the manifold. Rather than using the traditional method of welding the tube to the face of the flange. Moreover, our method is where we also face the problem of an oval port needing to transition smoothly to a round tube. The stubs process, in short, helps increase power through the improved flow.
  
• The collector we use is a custom-designed cast merge collector.
  

More information on our methods can be found HERE

Lifetime Warranty

Bombproof? We haven't found out yet. Walton Motorsport has designed the manifolds to put up with some serious abuse though. We offer a lifetime warranty on our products as many do. However, we put a huge emphasis on the strength and durability of our products to stop them from failing. The biggest inconvenience when it comes to a failed manifold (providing none of it ends up inside your turbo or engine) is removing it for repair. By eliminating the failure in the first place, we can honestly say it would be extremely unlikely to experience a failure of our products. Consequently, We wouldn't sleep well at night if our product failed and cost you a result.

Nissan SR20 Bottom Mount Exhaust Manifold Features

• Carefully selected 304 Stainless steel tube. Working to eliminate the risk of material failure.
  
• Fully Purged welded. Subsequently improving gas flow leading to increases in power and lowered response times.
  
• Ported Merge Collector Welded Internally and Externally. Resulting in high strength, durability and turbo lifespan.
  
• T25/T28 Flange for OEM Turbo Fitment.
  
• Fully Smoothed Head Ports designed to optimize gas flow. As a result, providing an increase in power and lowered response times.
  

For further questions or custom options please get in contact HERE or on +44(0)1494 715206. sales@waltonmotorsport.com or Facebook Messenger

When will my order be dispatched?

We aim to dispatch all "In Stock" items same working day if ordered before 12:00 Midday, orders placed after this time will be dispatched the following working day.

Out of stock items or items with a status of "Available from Supplier" are usually dispatched within 2 weeks. If there is urgency or a more accurate date is required please contact us.

Built to order manifolds are typically built in a 1st come 1st served order, our lead times vary with demand, We advise contacting us to get our most up to date information

What shipping options are available?

Within the UK our main shipping methods are 1st Class Royal Mail and Next Day DHL. Orders under £50 and small in size may have the option for Royal Mail dispatch. However, for urgent order we advise opting for the DHL Service

Outside the UK we almost exclusively use DHL, Shipping quotes can be obtained at the basket when entering the delivery address. For delivery destinations outside of the European Union (EU) items will be liable for import duty and taxes at the local rate. We are unfortunately unable to advise on these costs.

Orders delivered into the EU

No VAT will be charged at checkout, all duties and taxes are due at time of import.