Cylinder head work at APE is done on the latest state-of-the-art equipment. We have facilities to completely rebuild all motorcycle heads. As a manufacturer of high-performance cylinder head components, we have all of the parts in stock: bronze valve guides, stainless steel valves, valve springs, titanium retainers and more. Everything we need to complete your job without waiting on the parts - which slows down most shops.

APE's super state-of-the-art Serdi cylinder head machine, with triple-float head for the most accurate valve seats possible. The Serdi uses a multi-angle carbide cutter that has the seat shape ground into it. This ensures that all angles are exactly the same - all seat widths are exactly the same. A perfect valve job.

APE also offers cylinder head packages for offroad bikes/ATVs here.
For cylinder head info, contact jeff@aperaceparts.com

Cylinder Head Components

Stainless Steel Valves Valve Springs Retainers
Valve Guides Valve Guide Seals Keepers
Bronze Valve Seats Pair Valve Block Off Plates

Cylinder Head Packages

This package includes race porting and competition valve job, and assembly. NO PARTS INCLUDED. Valve stem seals extra. See below for the cost of additional services. #HW45 - $950.00

This package includes lower valve guides for big cams, race porting ,oversize intake and exhaust valve installation (stock seats), competition valve job, and assembly. Valves and guides, seals, valve springs and retainers included. Big bore motors only. No exchange. #HW46 - $1995.00



APE is the source for bronze valve seats for motorcycles. We supply them to many of the leading cylinder head shops and aftermarket manufactures. For more seat info, click here.

We are now offering our seats installed in Hayabusa cylinder heads as an option with other services we perform.

Bronze dissipates heat much quicker than steel which allows the valves to run cooler. Another benefit is that bronze does not beat the valve faces up like steel seats do. This is especially beneficial with titanium valves.

Available for stock size and oversize.

HW-48 Install 16 APE bronze seats in four cylinder head. $799.00

Valve job extra.

APE offers damaged combustion chamber repair. This is a good way to save those high dollar race heads that may have dropped a valve, etc. 

We completely weld up the chamber, them CNC a new combusition chamber.  Damages seats are replaced with APE bronze seats.  valve job is completed and head will be ready to shim and install. 

Please note that this is a little pricy, and if your head is stock, it is probably cheaper and faster to find a used one.

From $500 +

Cylinder Head Services

HW-3-16S    Install bronze valve guides and size for valves- labor only - 16 valve head 135.00
HW-4-16  Performance valve job - 16 valve head 229.00
HW-5-P Big valve installation with portingand match to ports (see ported heads below) N/C
HW-5-8/16  Install oversize valves on stock seats and blend to ports. Each side 8 and 16 valve fours. 199.95
HW-7  Assemble head (Seals extra) included in valve job 59.00
HW-7SP Adjusting spring heights when assembling head 50.00
HW-20-16 16-valve head. Disassemble, inspect, clean combustion chambers and valves, lap valves in. reassemble. NO PARTS INCLUDED. Seals extra. 160.00
HW-45 Port and valve job 16-valve 950.00
HW-48 Install 16 APE bronze seats in four cylinder head. 799.00
LC-415 Machine one valve stem 15.00
LC-420 Machine one valve head and stem 20.00
LC425 Grind one valve face 4.00
LC-350 Surface cylinder head 30.00

Click here to see our cylinder heads for offroad bikes/ATVs