Page 32 - APE Catalog
P. 32

R
ETAINERS
TITANIUM RETAINERS
APE valve spring retainers are machined from aircraft quality titanium bar stock in the APE plant on the latest state of the art computerized CNC machinery. CNC machining allows us to o er such advantages as bored taper keeper holes for exact keeper  t. Special gauging  xtures allow dimensions to be held close to provide exact installed heights when assembling the cylinder head. APE titanium retainers are shorter than stock to provide additional retainer to valve guide clearance for high lift cams. APE is the only manufacturer of motorcycle retainers that also builds cylinder heads. We know how they have to  t, how they have to clear the bucket, etc. No other manufacturer can o er this expertise. You might think this extra precision is expensive. The fact that we are the manufacturer allows us to provide these super precision retainers at a price everyone can a ord.
NO MATTER WHO BUILDS YOUR CYLINDER HEAD, INSIST THAT THEY USE APE TITANIUM RETAINERS.
The stock retainers for the ‘Busa are aluminum - not nearly as strong
as titanium. Although they seem to work  ne in stock motors, as soon as you increase the spring load above what the factory designed the stock retainers for you run
the risk of pulling the valve keepers through the aluminum retainer and dropping the valve in the motor. Also - the bottom of the stock retainer will contact the valve stem seal at about .380” cam lift. Removing material from the bottom of the stock aluminum retainer will only further weaken the stock retainer. APE retainers are .030 shorter than stock. For cam lifts over .410” you must use APE short valve guides. These titanium retainers must be used with APE valve springs. Use either APE #VS1300GSX or #VS1300GSX-2. See page 30
#TVSR1300-PRO - Set of 16 retainers SUZUKI SPORTBIKE
SUZUKI HAYABUSA
SCAN FOR PRICING ON APE TITANIUM RETAINERS
APPLICATION
YEARS
PART#
GSXR600
2001-2003
TVSR1000GSX
GSXR600
2004-2014
TVSRS1000GSX-2
GSXR750
1986 - 1990
TVSRS750
GSXR750
1991-1992 (SHIM STYLE)
TVSRS750SH
GSXR750
2000-2003
TVSR1000GSX
GSXR750
2004-2014
TVSRS1000GSX-2
GS1000 2 VALVE
ALL (REQS. KEEPERS #21-604 AND CUSTOM VALVES)
TVSRK1000
GSXR1000
2001-2004 (4MM STEM STEEL VALVES)
TVSRS1000GSX
GSXR1000
2005-2008 (4.5MM STEM TITANIUM VALVES)
TVSRS1000GSX-2
GS1100/1150
ALL - UP TO .400” CAM LIFT
TVSRS1100
GS1100/1150
ALL - UP TO .460” CMA LIFT
TVSRS750
GSXR1100
1986-1990
TVSRS750
GSXR1100
1991-1992 ( SHIM STYLE)
TVSRS750SH
KAWASAKI SPORTBIKE
APPLICATION
YEARS
PART#
ZX6-R
2003 - 2006
#TVSRK636
Z750S
2005 -2006
#TVSRK636
KZ650, KZ/GPZ750 FOURS
UP TO .440 LIFT
TVSRK1000
Z1, KZ900, KZ1000, KZ/GPZ1100
UP TO .440 LIFT
TVSRK1000
ZX10
THRU ‘89
#TVSRK1100
(661)256-7309 www.aperaceparts.com
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