Supertech Valves +1mm oversized D-series valves are made in one piece forged stainless steel. Intake valves in +1mm o/s are made in SAE EV8 (UNS S63008) and +1mm o/s exhaust valves are made from Inconel 575.
Inconel 575 is a Nickel based alloy material used for exhaust valves in engines that reach very high temperatures and its use is growing with the application of turbos and superchargers. These valves are hollow and filled with Sodium. This will ensure cooling of the valve by removing heat from the head of the valve to the stem, providing better temperature distribution, and lowering head temperature.
Supertech Performance apply’s different heat treatments to this material to obtain different hardness and ductility in accordance to application and budget (Street Performance or Heavy Duty Racing).
Available for the following D-series engines:
- 88-91 Civic/CRX 1.5liter D15Bx
- 88-91 Civic/CRX Si 1.6liter D16A6
- 92-95 Civic SOHC VTEC D16Z6
- 96-00 Civic SOHC non-VTEC D16Y7
- 96-00 Civic SOHC VTEC D16Y8
Sold as a 16pc set (8 intake / 8 exhaust valves)
Prompt Shipping and Professional Packing
Through our long-term relationship in a long-standing partnership with UPS, FedEx, DHL as well as a range of other world-class carriers, we can provide various shipping options. Our warehouse staff are highly trained and will pack the goods according to our exact and precise specifications. Your goods will undergo a thorough examination and will be securely packaged before being delivered. Every day, we send hundreds of packages to our customers across many countries. This demonstrates our dedication to becoming the largest online retailer in the world. The warehouses and centers of distribution are located in Europe, as well as the USA.
Note: Orders with more than one product are assigned a specific processing time based on the individual item.
Before shipping, we will check the item thoroughly. Most orders today are shipped in 48 hours. The delivery time is estimated to be between 3 and 7 days.
Returns
We do not manage the stock at our warehouse and factory. Actual stock levels may fluctuate at any point. It is possible that your order is out of stock when your order has been made.
Our policy is valid for 30 days. If thirty days have passed after you bought your item, we will not be able to offer you a return or exchange.
To be considered eligible for return, it must be unopened and in the same condition as when you received it in. It should also be in the original packaging.
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