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If you don't see your bike listed, call for selection and pricing 661-256-7309

CYLINDER BORING - IRON SLEEVE

 Singles

LC180  Bore and hone with piston purchase $47.50
LC181  Bore and hone with customer's pistons 85.00
LC201D Deglaze cylinder 16.00

CYLINDER BORING - ALUMINUM NIKASIL PLATED

Singles

LC145 Bore and re-nikasil single cylinder - w/Piston purchase 210.00
LC146 Bore and re-nikasil single cylinder - w/customer piston 230.00


YAMAHA PISTONS...
SCROLL DOWN FOR ATV PISTONS...

YAMAHA - YZ250F 2001-04
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
250cc 77MM 13.5:1 M1029C STD POR
263cc 79MM 13:1 M1033C 2 mm over. POR
263cc 79MM 12.7:1 4872M07900 2 mm over. POR
270cc 80MM 13:1 221797 3 mm over. POR

YAMAHA - YZ250F 2005-08
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
250cc 77MM 14:1 M1035C STD POR
250cc 77MM 14.25:1 M1135Y STD - FULL RACE PISTON - use stock Yamaha rings (not provided) POR
250cc 77MM 14.25:1 M1135C STD - FULL RACE PISTON POR
263cc 79MM 12.7:1 4872M07900 2 mm over. POR
263cc 79MM 12.5:1 M1036C 2 mm over. POR
262cc 79MM 13:1 247939

2 mm over. POR
269cc 80MM 13.5:1 M1050 3 mm over. POR
270cc 80MM 13:1 247940

3 mm over. POR

YAMAHA - YZ400F 1998-'99, WR4000F 1998-00
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
417cc 94MM 13.5:1 4650M09400 2 mm over. 148.34

YAMAHA - YZ426 2000-02, WR426 2001-02
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
426cc 95MM 13.5:1 4694M09500 STD 150.58
444cc 97MM 13.5:1 4694M09700 2 mm over. 165.63

YAMAHA - YZ450 2006-07
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
450cc 95MM 14:1 4929M09500 W STD 183.62

YAMAHA - YZ450F 2003-08
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
449cc 95MM 13.5:1 4786M09500 STD 159.07
449cc 95MM 13.75:1 M1043 STD - FULL RACE PISTON** POR
469cc 97MM 12.5:1 4785M09700 2 mm over. 159.07
469cc 97MM 13.5:1 4786M09700 2 mm over. 206.47
469cc 97MM 13.5:1 M1031 2 mm over. POR
478cc 98MM 13.5:1 M1051 3 mm over. POR

YAMAHA - XT500, TT500, SR500
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
534cc 90MM 11:1 4190M0900 3 mm over. 121.36

YAMAHA ATV - YFZ450 2004
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
449cc 96MM 13:1 4835M09600 96 BORE - 450 class legal 165.73
469cc 97MM 13:1 247953 2 mm over. POR
478cc 98MM 13:1 247952 3 mm over. POR

YAMAHA ATV - YFM600 GRIZZLY 1998-01
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
598cc 97MM STD 4797M09700 2 mm over. 129.65
634cc 98MM 10:1 4607M09800 3 mm over. 137.48

YAMAHA ATV - YFM660R RAPTOR 2001-'06
YFM660F GRIZZLY 2002-'07
RHINO 2005
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
660cc 100MM 11:1 4737M10000 STD 133.53
666cc 100.5MM 11:1 4737M10050 .5 mm over. 133.53
673cc 101MM 11:1 4737M10100 1 mm over. 133.53
686cc   102MM 11:1 4811M10200 2 mm over. 146.90
686cc   102MM 12.5:1 M1018A 2 mm over. POR
727cc   105MM 12:1 M1019A 5 mm over. POR

YAMAHA ATV - YAMAHA RAPTOR 700 - 2006-2007
DISPLACEMENT BORE SIZE COMP RATIO PART# MFG CODE NOTES PRICE
686cc 102MM 9.2:1 4902M10200 STD 112.25
699cc 103MM 9.2:1 4902M10300 1 mm over. 112.25
686cc 102MM 11:1 4903M10200 STD 142.61
686cc 102MM 12:1 M1040 STD POR
699cc 103MM 11:1 4903M10300 1 mm over. 142.61
714cc 104MM 11:1 247947

2 mm over. POR
714cc 104MM 12.5:1 247949

2 mm over. POR
727cc 105MM 10.75:1 M1041 3 mm over. POR
727cc 105MM 12:1 M1042 3 mm over. POR
727cc 105MM 13:1 M1053 3 mm over. POR
737cc 105MM 12.5:1 M1054 3.5 mm over. POR