DP   BIG   BORE   PISTON   KITS
CB500 | CB550 | CB650 |  RINGS  |  CUSTOM FEATURES

	572cc 10.5:1 60mm			STREET Bore in Piston Kit for stock or lightly modified CB500 and CB550 motors. Made for CB500 but can also be used on CB550 as a great street kit with 10:1 CR Features: - Smooth Finished Crowns - Accumulator Grooves - Contact Reduction Grooves - Made in the USA - No re-sleeving required, cylinder boring only! - For use with stock size valves - Lightweight 125g - Available with CFM20 or MLS Head Gasket ~ Custom Features Information * TECH SHEET *	DP572/sv - includes Forged Pistons, Rings, Pins, Clips, and Cometic CFM Head Gasket  $749.95 DP572/sv - includes Forged Pistons, Rings, Pins, Clips, and Cometic MLS Head Gasket  $779.95 This piston kit is also available in our Performance Package!
		572cc 11.5:1 60mm	RACE Bore in piston kit for CB500 and CB550 modified motors. Features: - Accumulator Grooves - Contact Reduction Grooves - Smooth finished domes - Broached pin supports    for superior pin oiling - High compression for racing - Large valve pockets - Under dome and internal   milling for weight reduction - Made in the USA - Very light weight - 139g - No re-sleeving required! - Available with CFM20 or MLS Head Gasket - Special order, please allow    12 to 16 weeks    production time ~ Custom Features Information * TECH SHEET *		DP572/60r - includes Forged Pistons, Rings, Pins, Clips, and Cometic CFM Head Gasket  $849.95 DP572/60r - includes Forged Pistons, Rings, Pins, Clips, and Cometic MLS Head Gasket  $879.95 This piston kit is also available in our Performance Package!
		592cc 10:1 61mm	STREET Bore in piston kit for stock or lightly modified CB550 motors. Great for daily drivers! Features: - Accumulator Grooves - Contact Reduction Grooves - Smooth finished domes - Broached pin supports    for superior oiling - Made in the USA - Very light weight - 140g - No re-sleeving required! - For use with stock valves; oversized can be used. - For use with stock cam; high lift cam can be used. ~ Custom Features Information - Available with CFM20 or MLS Head Gasket * TECH SHEET * - Special order, please allow    3 to 6 weeks    production time		DP592/psv - includes Forged Pistons, Rings, Pins, Clips, and Cometic CFM Head Gasket $799.95 DP592/psv - includes Forged Pistons, Rings, Pins, Clips, and Cometic MLS Head Gasket $829.95 This piston kit is also available in our Performance Package!
		592cc 10.5:1 61mm	HOT STREET Bore in piston kit for CB550. Features deeper valve pockets for use with higher lift cams; recommended WebCam #58a or #58b Features: - Accumulator Grooves - Contact Reduction Grooves - Smooth finished domes - Broached pin supports    for superior oiling - Large valve pockets - Internal milling for    weight reduction - Made in the USA - Very light weight - 143g - No re-sleeving required! - Available with CFM20 or MLS Head Gasket ~ Custom Features Information * TECH SHEET *		DP592/61s - includes Forged Pistons, Rings, Pins, Clips, and Cometic CFM Head Gasket $799.95 DP592/61s - includes Forged Pistons, Rings, Pins, Clips, and Cometic MLS Head Gasket $829.95 This piston kit is also available in our Performance Package!
		592cc 11.5:1 61mm	RACE Bore in piston kit for CB550. Features under dome milling, deep valve pockets and higher compression. for race use. Features: - Accumulator Grooves - Contact Reduction Grooves - Smooth finished domes - Broached pin supports    for superior pin oiling - High compression for racing - Large valve pockets - Under dome and internal milling    for extra weight reduction - Made in the USA - Very light weight - 144g - No re-sleeving required! - Available with CFM20 or MLS Head Gasket ~ Custom Features Information * TECH SHEET *		DP592/61r - includes Forged Pistons, Rings, Pins, Clips, and Cometic CFM Head Gasket $849.95 DP592/61r - includes Forged Pistons, Rings, Pins, Clips, and Cometic MLS Head Gasket $879.95 This piston kit is also available in our Performance Package!
		674cc 10.5:1 62mm	STREET Bore in Piston Kit for stock or lightly modified motors For 1979-82 CB650 SOHC Honda Features: - Brushed Dome with   No Sharp Edges - Accumulator Groove   for Better Ring Control - Contact Reduction Grooves   for Less Pre-ignition - No re-sleeving required! - Available with CFM20 or MLS Head Gasket - Made in the USA - Lightweight 162g ~ Custom Features Information * TECH SHEET		DP674 - includes Forged Pistons, Rings, Pins, Clips, and Cometic CFM Head Gasket $799.95 DP674 - includes Forged Pistons, Rings, Pins, Clips, and Cometic MLS Head Gasket $829.95
RING SETS
NOTE: It is common for the tapered lip that came in the bottom of your cylinders from the factory to be removed when installing larger bore piston kits. If the machine shop doing your boring does not taper the bottom of the sleeves after they are bored there will be a sharp edge at the bottom in place of the factory taper. It will need to be removed to make ring installation easier. You can taper the sleeves by hand with a Dremel tool or porting tool using a small 400 grit or less sanding drum. It is also very important to wash the bores with hot soapy water to remove any sanding residue and oil them lightly when the tapering job is complete. We recommend lightweight machine oil or engine oil. Following this procedure will greatly reduced the risk of broken rings during installation!

Available DP Custom Piston Options:
*Some features add production time to build.