KB Performance, 1200cc B.T. piston kit. +.080"

676 Speedo Seats & Luggage- racks Frame Chassis Suspension Forktubes Wheels Brake Fenders Gastanks Motorparts Gaskets Intake Transmission & Driveline Exhaust Electrical & Lights Handlebars, Cables & Mirrors Oil tanks Oil & Chemicals Fasteners Wind- shields Forward controls, Footpegs Miscellaneous MOTORPARTS - TOP END 10 84-99 1340CC EVO B.T. (KB258) 8.5:1 CR. Piston weight 350gr. Piston pin weight 97gr. Head type: Flat top. Dome +1.5cc. Compression height 1.375". Bore 3.4980". Stroke 4.250" (4-1/4"). Rod length 7.440". Cyl. length 5.550". 944659 Std. 944660 .005" 944661 .010" 944662 .020" 944663 .030" 944664 .040" 84-99 1340CC EVO B.T. (KB305) Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". Bore 3.4980". Stroke 4.250" (4-1/4"). Rod length 7.440". Cyl. length 5.550". 944665 Std. 944666 .005" 944667 .010" 944668 .020" 944669 .030" 944670 .040" 944665 944660 84-99 1340CC EVO B.T. (KB266) Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height 1.375". Bore 3.4980". Stroke 4.250" (4-1/4"). Rod length 7.440". Cyl. length 5.550". 944671 Std. 944672 .005" 944673 .010" 944674 .020" 944675 .030" 944676 .040" 944672 79-84 1340CC SHOVEL (KB288) 8.0:1 CR. Piston weight 357gr. Piston pin weight 97gr. Head type: Dome 0.426" / Dome -30cc. Compression height 1.285". / Bore 3.4980". Stroke 4.250" (4-1/4"). Rod length 7.440" / Cyl. length 5.330". Note: Around 30% of stock 1340cc Shovel cylinders may present a problem in combination with the location of some of the oil return holes since KB pistons have a wider piston ring pack for better piston stability in the cylinder. In these cases the oil return hole must be re- located (lowered) to avoid excessive oil consumption. 944647 Std. 944648 .005" 944649 .010" 944650 .020" 944651 .030" 944652 .040" 41-78 1200CC KNUCKLE, PAN, SHOVEL (KB263) 8.5:1 CR. Piston weight 370gr. Piston pin weight 97gr. Head type: Dome 0.656" / Dome -57cc. Compression height 1.450". Bore 3.4375" / Stroke 3.969" (3-31/32"). Rod length 7.440" / Cyl. length 5.330". 944631 Std. 944632 .005" 944633 .010" 944634 .020" 944635 .030" 944636 .040" 944637 .050" 944638 .060" 944639 .070" 944640 .080" 944632 944647 79-84 1340CC SHOVEL (KB297) 9.5:1 CR. Piston weight 388gr. Piston pin weight 97gr. Head type: Dome / Dome -47cc Compression height 1.285" / Bore 3.4980" Stroke 4.250" Rod length 7.440" / Cyl. length 5.330" Note: Around 30% of stock 1340cc Shovel cylinders may present a problem in combination with the location of some of the oil return holes since KB pistons have a wider piston ring pack for better piston stability in the cylinder. In these cases the oil return hole must be re- located (lowered) to avoid excessive oil consumption. 944653 Std. 944654 .005" 944655 .010" 944656 .020" 944657 .030" 944658 .040" 944654 48-84 88" TO 98" SHOVEL (KB294) Used with 3-5/8" big bore cylinders with 5.330" (stock) to 5.530" (+.200") length. Use with 4-1/4" stock stroke (88"), 4-1/2" (93"), 4-5/8" (96") to 4-3/4" (98") stroker flywheels. 10.0:1 CR. Piston weight 385gr. Piston pin weight 97gr. Head type: Dome / Dome -57cc. Compression height 1.285" / Bore 3.625" (3-5/8"). Stroke 4.250" to 4.750" (4-1/4" to 4-3/4"). Rod length 7.440" / Cyl. length 5.330" (Std) to 5.530" (+.200"). Note: Stock 5.330" cylinders can be used with stock 4-1/4" stroke. Longer strokes require correct length longer cylinders or stroker plates to achieve the desired compression ratio. 944683 Std. 944685 .010" 944686 .020" 944687 .030" 944688 .040" 944685 Keith Black is serious about pistons... Are you? KB HYPEREUTECTIC PISTONS piston note In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components, prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.