We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner
This valve is the largest displacement valve that Forge currently produce. The unique design features a 50mm (2”) aluminium piston (meaning no issues with split diaphragms). As we endeavour to continue our innovation, existing products are no exception. Therefore, we have now released the all new version of “FMDVRAY.” It has been difficult to improve upon this market leading design, but we have done just that. We run this valve on our very own Mk1 race car, that's how confident we are in the product!
- Improved external aesthetics
- Utilising world leading Eibach springs for more precise operation and consistency
- A myriad of incremental engineering enhancements to all internal components have been carried out to offer faster response times and longer service intervals
- The piston uses heat stabilised Viton O-rings
- Lubricated with high temperature Mobil1 grease to ensure a long life with minimal wear and very long service intervals
- A super durable and responsive aluminium piston
- A fully serviceable valve that is rebuildable in minutes
- Available in anodised black or anodised purple
- Ideal for custom installations using the aluminium weld on coupler and clamp provided
- Covered by the unique Forge Lifetime Warranty*
*Terms and conditions apply.
In the Box
1x Clamp-on Boss
1x V-Band Clamp
1x Forge Motorsport Key Ring
*The picture above illustrates the valve assembly, please note that only one shim can be used and how the shim fits between the piston and the spring*
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at firstname.lastname@example.org. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at email@example.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods, custom products (such as special orders or personalised items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. Please note that the customer is responsible for ensuring the correct part is ordered and fits the vehicle it purchased for.
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please note the Exceptions / non-returnable items section, which states there are no returns for perishable goods, custom products (such as special orders or personalised items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please remember it can take some time for your bank or credit card company to process and post the refund too. Some refunds may incur an admin/restocking fee.