When you port the cylinder heads on your V4 you need to match that with an improved exhaust system. That includes bored-out spacers to match the exhaust ports and exhaust header inside diameter.
I machine these to your specifications. Measure the exhaust port on your cylinder head and I will match that diameter. I also machine the engine mating surface of the spacer to ensure a good seal. In practice this makes a gasket optional.
Price is for one set of two spacers modified to your specifications.
I have a few sets on hand but request that you send yours to be modified. I will refund a USD $15 core charge once I receive your original reusable parts.
When you place your order I will contact you for:
- The inside diameter measurement desired.
- Shipping instructions for the core parts.