RB25 R34 NEO race ported heads 308 cfm flow big power ,max porting .

THESE HEADS ARE EXCHANGE or we do yours.  over 3 months developement put into these NEO cylinder  heads to end with a max flow head. absolutely the best flowing RB head youll see.  This price icludes  chemical cleaning, refacing, multi angle valve job, seals, tappett adjustment,  crazy portjob, assembled complete.   we use stock spring in this price see our RBparts section in ENGINE PARTS for spring and cam upgrades available.

RB 25 ported heads ultimate RB hydraulic head, 265cfm ,full reco with flowsheets.

great porting , flowsheets and fully recon. rb 20/25 heads in stock

RB 20 race ported heads recon, flowtested

multi angle valve job, refaced, race porting max. flow, new valve seals, assembled complete. 

RB26 CNC ported ,race prepped heads suit up to 270* cams

complete with valves ,our custom springs and retainers, new seals, full assembled less cams.   we can offer these heads as exchange.   a full CNC program and chamber port offering 290 cfm @28'' on intake at .450 lift and 200 cfm exhaust.  tomeii bronze guides fitted with superb 3 angle valve job. no other head world wide competes with our low lift and midrange flow figures that this head has to offer. can fit our race cams extra $1200 pair including tappett adjustment.

SR20 CNC ported head suit drift or street ,recon, race springs

CNC porting max. flow suit drift/drag or street. multi angle seat job, new guides, refaced, viton seals, assembled with race valve springs'

SR 20 PORTED AND RECO. HEADS suit s13/14/15

full reco with flowsheets. excellent throttle response exceptional low lift flow.

CA 18 ported and reco heads

supplied with flowsheets . porting for more horsepower and low down response