CP Pistons is one of the most trusted names in the industry, and for good reason. Their extensive shelf catalog provides the user with many of the options that you'd normally be resigned to going to a custom piston for. Their standard offering already includes Dual Pin Oilers - providing double the amount of oil to the wrist pin, radiused valve relifs, and the pin fitting final hone on the wrist pin bore. They even include an Accumulator Groove as a standard option. This provides a small pocket for the combustion gasses to collect after the first ring, reducing ring flutter and providing a better seal allowing more downward force on the piston A.K.A. - make more power. All pistons come balanced within one gram, include pin lock grooves and wrist pins at no additional charge. Note: When ordering pistons, please specify the Part# during the checkout process. CP Piston Part Numbers B-Series Pistons Part # Application Bore Size Compression Ratio B18C1 81.00mm (Standard Bore) 9.0:1 SC7011 B18C1 81.50mm (+.020" Overbore) 9.0:1 SC7014 B18C1 82.00mm (+.020" Overbore) 9.0:1 SC7012 B18C1 83.00mm (+.080" Overbore) 9.0:1 SC7015 B18C1 81.00mm (Standard Bore) 9.8:1 SC7016 B18C1 81.50mm (+.020" Overbore) 9.8:1 SC7013 B18C1 83.00mm (+.080" Overbore) 9.8:1 SC7110 B18C1 81.00mm (Standard Bore) 11.0:1 SC7111 B18C1 81.50mm (+.020" Overbore) 11.0:1 SC7113 B18C1 82.00mm (+.040" Overbore) 11.0:1 SC7112 B18C1 83.00mm (+.080" Overbore) 11.0:1 SC7115 B18C1 81.00mm (Standard Bore) 12.5:1 SC7116 B18C1 81.50mm (+.020" Overbore) 12.5:1 SC7114 B18C1 82.00mm (+.040" Overbore) 12.5:1 SC7135 B18C5 81.00mm (Standard Bore) 11.5:1 SC7136 B18C5 81.50mm (+.020" Overbore) 11.5:1 SC7020 B-Series 84.00mm (Standard Bore) 9.0:1 SC7021 B-Series 84.50mm (+.020" Overbore) 9.0:1 SC7022 B-Series 85.00mm (+.040" Overbore) 9.0:1 SC7017 B-Series 84.00mm (Standard Bore) 9.7:1 SC7018 B-Series 84.50mm (+.020" Overbore) 9.7:1 SC7019 B-Series 85.00mm (+.040" Overbore) 9.7:1 SC7117 B-Series 84.00mm (Standard Bore) 11.5:1 SC7118 B-Series 84.50mm (+.020" Overbore) 11.5:1 SC7119 B-Series 85.00mm (+.040" Overbore) 11.5:1 SC7120 B-Series 84.00mm (Standard Bore) 12.5:1 SC7121 B-Series 84.50mm (+.020" Overbore) 12.5:1 SC7122 B-Series 85.00mm (+.040" Overbore) 12.5:1
