These are shelf (non-custom) production pistons.

Suzuki GSXR1000 09-16
Std Bore: 74.5mm

Piston Kit #	Disp.	Bore Size	Over Size	Comp Ratio	Ring #	Pin #	Lock #
MX4046C	1039cc	76mm	1.5mm	13.5:1	CPXG7600C	591-1650-13CP1C	591-050SLX**

**Needs KRAMM-LOX KL-050 Tool for Installation (1 time extra charge)

Suzuki GSXR1000 05-08
Std Bore: 73.4mm

Piston Kit #	Disp.	Bore Size	Over Size	Comp Ratio	Ring #	Pin #	Lock #
M4047	998cc	73.4mm	STD	13.5:1	OEM (INCL)	591-1500-11CP1C	591-050SLX**
M4018	1043cc	75mm	+1.6mm	13.5:1	CPUG-2952	591-1500-11CP1C	591-050SLX**
MX4019C	1078cc	76mm	+2.6mm	13.5:1	CPXG7600C	591-1650-13CP1C	591-050SLX**
MX4041C*	1142cc	76mm	+2.6mm	12.5:1	CP7600C	591-1650-13CP1C	591-050SLX**

*For use with +4mm Stroke Crankshaft (63mm)
**Needs KRAMM-LOX KL-050 Tool for Installation (1 time extra charge)

Suzuki GSXR1000 01-04
Std Bore: 73mm

Piston Kit #	Disp.	Bore Size	Over Size	Comp Ratio	Ring #	Pin #	Lock #
M4000	1043cc	75mm	+2mm	13.5:1	CPNG-2-2952	W630-1810-12-CP1C	630-050-SWL
M4001	1078cc	76mm	+3mm	13.5:1	CPNG-2-2952	W630-1810-12-CP1C	630-050-SWL
MX4001C	1078cc	76mm	+3mm	13.5:1	CPXG7600C	W630-1650-13CP1C	630-050-SWL
MX4043C*	1142cc	76mm	+3mm	12.5:1	CP7600C	W630-1650-13CP1C	630-050-SWL
MX4044C*	1172cc	77mm	+4mm	12.8:1	CP7700C	W630-1650-13CP1C	630-050-SWL

*For use with +4mm Stroke Crankshaft (63mm)