We use ONLY good condition OEM BMW 885 core cylinder heads. The 885 head casting is originally found on the M20B25 (2.5L) engine.
The BimmerHeads Race M20 cylinder heads are for those who are truly power hungry. This version of our 885 head is great for those planning to build high horsepower stroker M20 engines or turbo monsters. This is what we would consider to be a “Stage 3” cylinder head. This head comes standard with new OEM BMW valve springs and new stainless valves with the options to upgrade to our performance dual springs and oversized valves. Our Race head also allows the option of coolant jacket welding and/or 1mm oversized valves for the maximum flow. Our Race cylinder heads are completely torn down and rebuilt receiving the following:
Cleaning
Pressure testing
Resurfacing
Valve grinding & valve seat grinding
New valve guides
New valve seals & cam seals
New intake studs & new exhaust studs
New rocker arm hardware & eccentrics
New cam gear, cam gear cover, and rotor mount
New Heavy Duty rocker arms
Extensive porting & polishing
Please allow 5 weeks build time.
Price includes FREE shipping in the continental US!
Please email us for international shipping quotes.
Price includes a $250 core charge.
Once you have received your BimmerHeads cylinder head please re-use our packaging to send your core back to us for a refund.