You are buying a set of CP Pistons which include the following in the box:

* 4 Pistons
* 4 Wristpins
* All the locks
* All the rings

Part Numbers
CP Pistons Honda / Acura B18c1 B18c5 B16 B18a B18b B20
Make Part # Engine Bore Size Compression Ratio
Acura SC7005 B18A1/B1 3.189 STD 9.0
Acura SC7006 B18A1/B1 3.209 +.020 9.0
Acura SC7105 B18A1/B1 3.189 STD 10.5
Acura SC7106 B18A1/B1 3.209 +.020 10.5
Honda SC7020 B - Series 3.307 STD 9.0
Honda SC7021 B - Series 3.327 +.020 9.0
Honda SC7022 B - Series 3.346 +.040 9.0
Honda SC7017 B - Series 3.307 STD 9.7
Honda SC7018 B - Series 3.327 +.020 9.7
Honda SC7019 B - Series 3.346 +.040 9.7
Honda SC7117 B - Series 3.307 STD 11.5
Honda SC7118 B - Series 3.327 +.020 11.5
Honda SC7119 B - Series 3.346 +.040 11.5
Honda SC7120 B - Series 3.307 STD 12.5
Honda SC7121 B - Series 3.327 +.020 12.5
Honda SC7122 B - Series 3.346 +.040 12.5
Acura/Honda SC7000 B16A 3.189 STD 9.0
Acura/Honda SC7001 B16A 3.209 +.020 9.0
Acura/Honda SC7100 B16A 3.189 STD 10.5
Acura/Honda SC7101 B16A 3.209 +.020 10.5
Acura SC7010 B18C1 3.189 STD 9.0
Acura SC7011 B18C1 3.209 +.020 9.0
Acura SC7014 B18C1 3.228 +.040 9.0
Acura SC7012 B18C1 3.268 +.080 9.0
Acura SC7015 B18C1 3.189 STD 9.8
Acura SC7016 B18C1 3.209 +.020 9.8
Acura SC7013 B18C1 3.268 +.080 9.8
Acura SC7110 B18C1 3.189 STD 11.0
Acura SC7111 B18C1 3.209 +.020 11.0
Acura SC7113 B18C1 3.228 +.040 11.0
Acura SC7112 B18C1 3.268 +.080 11.0
Acura SC7115 B18C1 3.189 STD 12.5
Acura SC7116 B18C1 3.209 +.020 12.5
Acura SC7114 B18C1 3.228 +.040 12.5

If you do not know the CP Pistons size you need, please contact us so we could help! 321-251-7845 or email us at: sales@delirium-motorsports.com