| YEARS | GPZ1100 1981-1982 KZ1000J 1981-1997 |
| STROKE | 66MM |
| RING GROOVES | 1.0, 1.2, 2.8 |
| KIT CONTAINS | 4 PISTONS, RINGS, WRIST PINS, BUTTONS, AND HEAD GASKET |
| WRIST PIN SIZE | 17MM (CAN BE HONED TO 18MM) |
| MAX VALVE SIZE | 39MM IN, 33MM EX (POCKET 1MM LARGER) |
| DISPLACEMENT | BORE SIZE | INSTALLATION REQUIREMENTS | USAGE | COMP RATIO | PART NUMBER | PRICE AS OF 06/01/24 |
| 1075CC J-Model only: 2mm oversize | 72MM/2.834 In | Cylinder boring | ROAD | 10.5:1 | MTC-J1075 | $657.70 |
| DRAG | 12.5:1 | MTC-J1075H | ||||
| TURBO | 7.8:1 | MTC-J1075T | ||||
| 1135CC J-Model: 4mm oversizeGPZ: 1.5mm oversize | 74MM/2.913 In | J-Model: ResleeveGPZ: Cylinder bore | ROAD | 10.5:1 | MTC-J1135 | |
| DRAG | 12.5:1 | MTC-J1135H | ||||
| TURBO | 7.8:1 | MTC-J1135T | ||||
| 1197CC J-Model: 6mm oversizeGPZ: 3.5mm oversize | 76MM/2.992 In | Resleeve bore crankcase | ROAD | 10.5:1 | MTC-J1197 | |
| DRAG | 12.5:1 | MTC-J1197H | ||||
| TURBO | 7.8:1 | MTC-J1197T | ||||
| 1261CC J-Model: 8mm oversizeGPZ: 5.5mm oversize | 78MM/3.070 In | ROAD | 10.5:1 | MTC-J1261 | ||
| DRAG | 12.5:1 | MTC-J1261H | ||||
| TURBO | 7.8:1 | MTC-J1261T | ||||
| 1327CC J-Model: 10mm oversizeGPZ: 7.5mm oversize | 80MM/3.149 In | Big block required bore crankcase | ROAD | 10.5:1 | MTC-J1327 | |
| DRAG | 13.5:1 | MTC-J1327H | ||||
| TURBO | 7.8:1 | MTC-J1327T | ||||
| 1394CC J-Model: 12mm oversizeGPZ: 9.9mm oversize | 82MM/3.229 In | ROAD | 10.5:1 | MTC-J1394 | ||
| DRAG | 13.5:1 | MTC-J1394H | ||||
| 1428CC J-Model: 13mm oversizeGPZ: 10.5mm oversize | 83MM/3.267 In | Big block required bore crankcase | ROAD | 10.5:1 | MTC-J1428 | $677.20 |
| DRAG | 13.5:1 | MTC-J1428H | ||||
| TURBO | 7.8:1 | MTC-J1428T | ||||
| 1500CC J-Model: 15mm oversizeGPZ: 12.5mm oversize | 85MM/3.346 In | TURBO | 7.8:1 | MTC-J1500T |