Head Quarters forged pistons are manufactured exclusively for our company by CP Pistons, the best in the business.
Used with our Head Quarters HVP Twin Cam cylinder heads, a wide variety of compression ratios are available.

All Twin Cam piston sets include two pistons with rings, pins and clips.

Pistons for 95 cubic inch Twin cam motors. 3.875" bore by 4" stroke.
CP-M5070             9.5:1 Compression 3.875" bore
CP-M5017             10:1 Compression, 3.875" bore
CP-M5019             10:1 Compression, 3.885" .010" oversize bore
CP-M5061             10.5:1 Compression, 3.875" bore
CP-M5062             10.5:1 Compression, 3.880" .005" oversize bore
CP-M5063             10.5:1 Compression, 3.885" .010" oversize bore
Pistons for 98 cubic inch Twin Cam motors. 3.938" bore by 4" stroke
HQ-8-5070            10.5:1 Compression, 3.938" bore
Pistons for 103 cubic inch Twin Cam motors. 3.875" bore by 4-3/8" stroke.
HQ-8-5064             10:1 Compression, 3.875" bore
HQ-8-5065             10:1 Compression, 3.880" .005" oversize bore
HQ-8-5164             10.5:1 Compression, 3.875" bore
Pistons for 107 cubic inch Twin Cam motors. 3.938" bore by 4-3/8" stroke.
HQ-8-5200             10.5:1 Compression, 3.938" bore
Pistons for 110 cubic inch Twin Cam motors. 4.010" bore by 4-3/8" stroke.
HQ-8-65375           10.5:1 Compression, 4.010" bore .010"  oversize
Pistons for 113 cubic inch Twin Cam motors. 4.065" bore by 4-3/8" stroke.
HQ-8-62873           10.5:1 Compression, 4.065" bore .005" oversize
HQ-8-62874           10.5:1 Compression, 4.075" bore .015" oversize
Pistons for 120 cubic inch Twin Cam motors. 4.065" bore by 4-5/8" stroke.
HQ-8-76868           10.5:1 Compression, 4.065" bore .005" oversize
HQ-8-?????           10.5:1 Compression, 4.075" bore .015" oversize

More Over sizes Available