HOME         CATALOGUE          TECH INFO          SHOW YOUR RIDE         CALCULATORS          ABOUT US         GALLERY        CONTACT US

Canadian Mailing Address

SD Performance
44408 Vedder Mountain Road
V2R 4C4

US Mailing Address

SD Performance
PO Box 1844
Sumas, WA, 98295-1844

SD Performance
446 Harrison St.
Unit #81A
Sumas, WA 98295

The 446 Harrison St. address is our US Shipping Address for sending, Heads, Intakes, Etc. to us from the
U.S. via UPS or other freight company. When shipping heads DO NOT put 2 heads in one package, if you need directions on how best to package cylinder heads contact us for more info.

(Do not ship to this address via US Post, Please use our PO Box above for sending anything to us via US Post)

Contact Us by E-mail at

Tech Questions/Cyl. Head & Parts Selection Recommendations, General Inquires, Quotes, Parts Orders, Order Status (Dave)
[email protected]

News & Events

What's new at SD in 2021
We're busier than ever at SD CNC porting and machining heads and intakes and putting top end packages more >>
What's going on at SD in 2020
We're keeping plenty busy in the shop in this crazy world we're all living in. Demand for our CNC ported more >>
End of 2018 is fast approaching!!
Well it's been a while since we had an update on what's been going on at SD so here's a quick overview. more >>


Click here to see our list of links