Engine Performance

ADA Racing Billet Cylinder Head Dome for Kawasaki 1100 engines. Includes compression (OR042) and dome top (OR020) o-rings. Squish relief is .015 @ 82mm with a 4 degree angle. These domes fit ADA Racing Kawasaki 1100 Cylinder Heads.Domes are sold individually.

ADA Racing billet dome for the Yamaha 701 and 1100 engines, includes compression(OR043) and dome top(OR020) orings. Squish relief is .015 inch @ 83mm with a 10.5 degree angle.

Billet Girdled Cylinder Head for the Kawasaki 750 and 800. CNC machined at ADA Racing from 6061-T6 aluminum. Anodized for protection against corrosion. This is the head shell only and includes o-rings that fit into the grooves in the head shell and brass fittings.

ADA Racing Yamaha 701 Cylinder Head Exhaust Bracket for Girdled ADA Cylinder Heads. This bracket only works with the 3 bolt 701 Superjet style exhaust. Includes mounting bolts and spacers.

Part Number: YEXBRKT-2M

ADA Racing Billet Cylinder Head for the 1991-1995 550SX aluminum reed cylinder engine. Head design is all o-rings and does not use a head gasket. The head is designed to be installed with the water outlets on the intake side and has 3 water outlets available. Head shell includes o-rings, brass water fittings and plugs. This head uses the stock studs and nuts.

ADA Racing Billet Cylinder Head for Kawasaki 650 engines. All ADA Racing billet heads are made from 6061-T6 aluminum and CNC machined for consistency and performance. Anodized for durability and protection against salt-water corrosion. This is the head shell only. Includes orings that fit into the grooves in the head shell and brass fittings. You will need to order domes below under Related Products. When ordering domes, you must order a quantity of 2, as domes are sold individually.

ADA Racing billet dome for the Yamaha 760 and 1200 engines, includes compression(OR043) and dome top(OR020) orings. Squish relief is .015 inch @ 86mm with a 10.5 degree angle.

ADA Racing Billet Head Shell for the Yamaha 701/760. All ADA Racing billet heads are made from 6061-T6 aluminum and CNC machined in-house for consistency and performance. The head shell is then anodized for durability and protection against salt-water corrosion. This is the head shell only and includes orings that fit into the grooves in the head shell and brass fittings. Available in Black or Silver.

ADA Racing Billet Cylinder Head Dome for Kawasaki 750. Includes compression (OR042) and dome top (OR020) o-rings. Squish relief is 0 @ 81mm with a 4 degree angle. These domes fit ADA Racing standard 750/800 Cylinder Head and ADA Racing original girdled head with the billet brackets. Domes are sold individually.

ADA Racing Cylinder Head Girdle kit for the original ADA Kawasaki 750/800 Girdled Head. Includes all hardware and brackets. No cylinder mods required for this girdle kit, just bolt it on!

Part Number: KA800G

Replacement ADA Head O-Ring Kit for Kawasaki 750/800

Part Number: 01-03-206

ADA Racing billet dome includes compression(OR042) and dome top(OR020) orings. Squish relief is .005 inch @ 82.5mm(fits up to 83mm piston) with a 4 degree angle. These domes fit ADA Racing standard 750/800 head and ADA Racing original girdled head with the billet brackets.

ADA Racing V2 Billet Cylinder Head for the Kawasaki 800 SXR engine. All ADA Racing billet heads are made from 6061-T6 aluminum and CNC machined at ADA for consistency and performance. The head shell is then anodized for durability protection against salt-water corrosion. This is the head shell only and includes o-rings that fit into the grooves in the head shell and brass fittings. This is the version 2 head that requires grinding the cylinder for girdle stud clearance. V2 Girdle kit and domes are NOT included.

ADA Racing Cylinder Head Girdle Kit for Yamaha 701/760 and Yamaha 1100/1200 Girdled Cylinder heads. Includes 6 stainless studs, 6 stainless washers, and 6 chrome acorn nuts. The only true girdle system. It does not bolt the cylinder to the cases, but sandwiches the cylinder between the head and the cases. Therefore, there is no pressure on the base of the cylinder. The threads are rolled for strength and not cut. Thread rolling compresses the material adding strength to the threads. Cutting threads leaves the root of the thread sharp, weakening the thread and making them easier to break.

Part Number: YA701G6

ADA Cylinder Head Dome for ADA Racing Kawasaki 550SX billet head. Includes compression (OR041) and dome top (OR020) o-rings.Domes are sold individually.