BIG BORE KIT MODEL AND MASTER PRICE LIST
This is our master price list for the biggest selection of big bore kits available in the motorcycle industry. All of these kits include all-inclusive performance machining services and aftermarket top end parts.
For 2-stroke engines, the package deals include:
Cleaning and disassembly.
Inspection and measurement.
Over-boring to big bore size.
Porting - You’ll get your choice of powerbands; more low/mid, more mid/top, broader powerband, and choices of fuel; pump or race gas.
Replating with nickel silicon-carbide composite plating and Diamond honing.
Head mods; resurfacing, squish and bowl machining, polishing.
Powervalve service with assembly and timing, ready for installation!
WISECO, WOSSNER, VERTEX, PRO-X pistons, gasket kits, and top end needle bearing.
Piston check with ring end gapping.
Cylinder bore “break-in finish,” no safety measures needed, just ride!
Backed up by a 1-year warranty on the plating and free updates to the porting and diamond honing.
JAPANESE DIRT BIKES
Honda
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| CR125 |
2004 |
139 |
FM-HM125-C16 |
2 |
841MO5700 |
W6104 |
B1001 |
$500 |
| CR125 |
90-91 |
144 |
FM-HM125-C10 |
2 |
11317MO5801 |
W5965 |
B1013 |
$475 |
| CR125 |
92-99 |
134 |
FM-HM125-C11 |
2 |
676MO5600 |
W5965 |
B1001 |
$450 |
| CR125 |
92-99 |
144 |
FM-HM125-C12 |
2 |
11317MO5801 |
W5965 |
B1013 |
$475 |
| CR125 |
00-02 |
134 |
FM-HM125-C13 |
2 |
676MO5600 |
W5966 |
B1001 |
$450 |
| CR125 |
2003 |
134 |
FM-HM125-C14 |
2 |
676MO5600 |
W6127 |
B1001 |
$450 |
| CR125 |
2004 |
134 |
FM-HM125-C15 |
2 |
841MO5600 |
W6104 |
B1001 |
$500 |
| CR125 |
2005-7 |
134 |
FM-HM125-C17 |
2 |
841MO5600 |
W6389 |
B1001 |
$450 |
| CR125 |
2005-7 |
139 |
FM-HM125-C18 |
2 |
841MO5700 |
W6389 |
B1001 |
$500 |
| CR125 |
2005-7 |
144 |
FM-HM125-C19 |
2 |
11317MO5801 |
W6389 |
B1013 |
$500 |
| CR125 |
90-91 |
134 |
FM-HM125-C9 |
2 |
595MO5600 |
W5318 |
B1013 |
$450 |
| CR125 |
1989 |
144 |
FM-HM125-C8 |
2 |
11317MO5801 |
W5270 |
B1013 |
$400 |
| CR125 |
73-78 |
134 |
FM-HM125-C1 |
2 |
339MO5800 |
W5725 |
B1018 |
$400 |
| CR125 |
79-80 |
130 |
FM-HM125-C2 |
2 |
448MO5750 |
W5680 |
B1018 |
$425 |
| CR125 |
81-83 |
134 |
FM-HM125-C3 |
2 |
448MO5750 |
W4025 |
B1018 |
$400 |
| CR125 |
1984 |
134 |
FM-HM125-C4 |
2 |
448MO5750 |
W4027 |
B1018 |
$400 |
| CR125 |
1985 |
134 |
FM-HM125-C5 |
2 |
518MO5600 |
W4027 |
B1018 |
$400 |
| CR125 |
1986 |
134 |
FM-HM125-C6 |
2 |
518MO5600 |
W4894 |
B1018 |
$400 |
| CR125 |
87-89 |
134 |
FM-HM125-C7 |
2 |
564M05600 |
W5270 |
B1001 |
$400 |
| CR250 |
1984 |
265 |
FM-HM250-C5 |
3 |
526MO6800 |
W4773 |
B1003 |
$450 |
| CR250 |
1985 |
265 |
FM-HM250-C6 |
3 |
526MO6800 |
W4029 |
B1003 |
$450 |
| CR250 |
86-91 |
265 |
FM-HM250-C7 |
3 |
614MO6850 |
W5271 |
B1003 |
$600 |
| CR250 |
92-96 |
265 |
FM-HM250-C8 |
3 |
614MO6850 |
W5319 |
B1003 |
$600 |
| CR250 |
97-01 |
265 |
FM-HM250-C9 |
3 |
702MO6850 |
W5319 |
B1003 |
$600 |
| CR250 |
1983 |
265 |
FM-HM250-C4 |
3 |
466MO6800 |
W4772 |
B1003 |
$450 |
| CR250 |
81-82 |
265 |
FM-HM250-C3 |
3 |
466MO6800 |
W4028 |
B1003 |
$450 |
| CR250 |
78-80 |
265 |
FM-HM250-C2 |
3 |
431MO7200 |
W5658 |
B1003 |
$500 |
| CR250 |
75-77 |
265 |
FM-HM250-C1 |
3 |
338MO7200 |
W5558 |
B1003 |
$450 |
| CR250 |
2002-4 |
265 |
FM-HM250-C10 |
3 |
801MO6850 |
W6157 |
B1003 |
$600 |
| CR250 |
2005-7 |
265 |
FM-HM250-C11 |
3 |
8171D210 |
W5361 |
B1003 |
$600 |
| CR500 |
82-84 |
520 |
FM-HM500-C1 |
4 |
871MO9100 |
W6646 |
B1004 |
$475 |
| CR500 |
85-88 |
520 |
FM-HM500-C2 |
4 |
871MO9100 |
W4896 |
B1004 |
$475 |
| CR500 |
89-01 |
520 |
FM-HM500-C3 |
4 |
871MO9100 |
W5223 |
B1004 |
$475 |
| CR80 |
86-04 |
100 |
FM-HM80-C2 |
2 |
766MO5200 |
W5973 |
B1012 |
$425 |
| CR80 |
86-91 |
92 |
FM-HM80-C1 |
2 |
643MO4900 |
W5221 |
B1012 |
$425 |
| CR85 |
2005-7 |
100 |
FM-HM85-C1 |
2 |
766MO5200 |
W5973 |
B1080 |
$425 |
Kawasaki
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| KDX200 |
95-98 |
225 |
FM-KM200-C1 |
3 |
750MO7000 |
W5856 |
B1008 |
$550 |
| KDX220 |
98-05 |
225 |
FM-KM220-C1 |
3 |
750MO7000 |
W5856 |
B1008 |
$550 |
| KX100 |
1995+ |
107 |
FM-KM100-C1 |
2 |
23621200 |
W5675 |
B1006 |
$475 |
| KX125 |
1990 |
130 |
FM-KM125-C1 |
2 |
589MO5700 |
W5224 |
B1008 |
$475 |
| KX125 |
1991 |
130 |
FM-KM125-C2 |
2 |
603MO5700 |
W5266 |
B1008 |
$475 |
| KX125 |
1992 |
130 |
FM-KM125-C3 |
2 |
616MO5500 |
W5320 |
B1008 |
$475 |
| KX125 |
93-94 |
144 |
FM-KM125-C4 |
2 |
11317MO5801 |
W5349 |
B1013 |
$500 |
| KX125 |
98-00 |
144 |
FM-KM125-C6 |
2 |
11317MO5801 |
W5666 |
B1013 |
$500 |
| KX125 |
2001-2 |
144 |
FM-KM125-C7 |
2 |
11317MO5801 |
W5901 |
B1013 |
$500 |
| KX125 |
2003+ |
134 |
FM-KM125-C8 |
2 |
822MO5600 |
W6253 |
B1013 |
$500 |
| KX125 |
95-97 |
144 |
FM-KM125-C5 |
2 |
11317MO5801 |
W5455 |
B1013 |
$500 |
| KX125 |
2003+ |
144 |
FM-KM125-C9 |
2 |
788MO5800 |
W6253 |
B1013 |
$500 |
| KX250 |
85-86 |
255 |
FM-KM250-C2 |
3 |
439MO7100 |
W4899 |
B1022 |
$500 |
| KX250 |
2005+ |
295 |
FM-KM250-C10 |
3 |
11320MO7200 |
W6324 |
B1022 |
$660 |
| KX250 |
2004 |
295 |
FM-KM250-C9 |
3 |
11320MO7200 |
W6354 |
B1022 |
$660 |
| KX250 |
93-03 |
295 |
FM-KM250-C8 |
3 |
11320MO7200 |
W5350 |
B1022 |
$660 |
| KX250 |
93-03 |
265 |
FM-KM250-C7 |
3 |
617MO6850 |
W5350 |
B1022 |
$550 |
| KX250 |
1992 |
265 |
FM-KM250-C6 |
3 |
617MO6850 |
W5321 |
B1022 |
$500 |
| KX250 |
90-91 |
265 |
FM-KM250-C5 |
3 |
607MO6850 |
W5275 |
B1022 |
$500 |
| KX250 |
88-89 |
265 |
FM-KM250-C4 |
3 |
556MO6950 |
W5120 |
B1022 |
$500 |
| KX250 |
1987 |
265 |
FM-KM250-C3 |
3 |
556MO6950 |
W5119 |
B1022 |
$500 |
| KX250 |
83-84 |
255 |
FM-KM250-C1 |
3 |
439MO7100 |
W4037 |
B1022 |
$500 |
| KX500 |
89-90 |
525 |
FM-KM500-C1 |
3 |
575MO8800 |
W5276 |
B1036 |
$660 |
| KX500 |
91-04 |
525 |
FM-KM500-C2 |
3 |
575MO8800 |
W5277 |
B1036 |
$660 |
| KX60 |
83-03 |
66 |
FM-KM60-C1 |
2 |
648MO4500 |
W5422 |
B1043 |
$375 |
| KX65 |
2000+ |
72 |
FM-KM65-C1 |
2 |
752MO4650 |
W5889 |
B1043 |
$375 |
| KX80 |
91-97 |
92 |
FM-KM80-C5 |
2 |
644MO5000 |
W5273 |
B1006 |
$375 |
| KX80 |
1984 |
85 |
FM-KM80-C1 |
2 |
514MO4900 |
W4033 |
B1006 |
$375 |
| KX80 |
1985 |
85 |
FM-KM80-C2 |
2 |
514MO4900 |
W5272 |
B1006 |
$375 |
| KX80 |
86-87 |
85 |
FM-KM80-C3 |
2 |
539MO4900 |
W4897 |
B1006 |
$375 |
| KX80 |
88-90 |
92 |
FM-KM80-C4 |
2 |
644MO5000 |
W5117 |
B1006 |
$375 |
| KX80 |
91-97 |
100 |
FM-KM80-C6 |
2 |
651MO5250 |
W5465 |
B1006 |
$400 |
| KX80 |
98-00 |
92 |
FM-KM80-C7 |
2 |
644MO5000 |
W5673 |
B1006 |
$400 |
| KX80 |
98-00 |
100 |
FM-KM80-C8 |
2 |
651MO5250 |
W5674 |
B1006 |
$425 |
| KX85 |
2001+ |
107 |
FM-KM85-C3 |
2 |
23621200 |
W5675 |
B1006 |
$475 |
| KX85 |
2001+ |
92 |
FM-KM85-C1 |
2 |
782MO505 |
W5895 |
B1006 |
$425 |
| KX85 |
2001+ |
100 |
FM-KM85-C2 |
2 |
651MO5250 |
W5674 |
B1006 |
$450 |
Suzuki
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| RM125 |
2004+ |
144 |
FM-SM125-C10 |
2 |
836MO5800 |
W6254 |
B1013 |
$500 |
| RM125 |
97-03 |
144 |
FM-SM125-C9 |
2 |
11317MO5801 |
W6385 |
B1013 |
$500 |
| RM125 |
91-96 |
144 |
FM-SM125-C8 |
2 |
11317MO5801 |
W6384 |
B1013 |
$500 |
| RM125 |
1990 |
144 |
FM-SM125-C7 |
2 |
11317MO5801 |
WW5316 |
B1013 |
$500 |
| RM125 |
1989 |
144 |
FM-SM125-C6 |
2 |
11317MO5801 |
W5165 |
B1013 |
$500 |
| RM125 |
1986 |
134 |
FM-SM125-C5 |
2 |
519MO5600 |
W4901 |
B1018 |
$325 |
| RM125 |
1985 |
134 |
FM-SM125-C4 |
2 |
519MO5600 |
W4043 |
B1018 |
$325 |
| RM125 |
1984 |
134 |
FM-SM125-C3 |
2 |
511MO5600 |
W4043 |
B1018 |
$325 |
| RM125 |
1983 |
134 |
FM-SM125-C2 |
2 |
511MO5600 |
W4042 |
B1018 |
$325 |
| RM125 |
1976-78 |
144 |
FM-SM125-C1 |
2 |
449MO5800 |
|
B1018 |
$300 |
| RM250 |
96-98 |
295 |
FM-SM250-C9 |
3 |
11320MO7200 |
W5518 |
B1014 |
$660 |
| RM250 |
1999 |
295 |
FM-SM250-C10 |
3 |
11320MO7200 |
W5741 |
B1014 |
$660 |
| RM250 |
94-95 |
265 |
FM-SM250-C8 |
3 |
642MO6900 |
W5431 |
B1014 |
$550 |
| RM250 |
92-93 |
265 |
FM-SM250-C7 |
3 |
642MO6900 |
W5664 |
B1014 |
$550 |
| RM250 |
1991 |
265 |
FM-SM250-C6 |
3 |
642MO6900 |
W5262 |
B1014 |
$550 |
| RM250 |
1990 |
265 |
FM-SM250-C5 |
3 |
642MO6900 |
W5278 |
B1014 |
$550 |
| RM250 |
1989 |
265 |
FM-SM250-C4 |
3 |
642MO6900 |
W5166 |
B1014 |
$550 |
| RM250 |
87-88 |
265 |
FM-SM250-C3 |
3 |
558MO6900 |
W5129 |
B1014 |
$550 |
| RM250 |
2001-2 |
265 |
FM-SM250-C12 |
3 |
756MO6850 |
W5899 |
B1014 |
$550 |
| RM250 |
1983 |
265 |
FM-SM250-C1 |
3 |
485MO7200 |
W4045 |
B1014 |
$350 |
| RM250 |
84-85 |
265 |
FM-SM250-C2 |
3 |
485MO7200 |
W4046 |
B1014 |
$350 |
| RM250 |
2003+ |
265 |
FM-SM250-C13 |
3 |
804MO6850 |
W6111 |
B1014 |
$550 |
| RM250 |
2003+ |
295 |
FM-SM250-C14 |
3 |
11320MO7200 |
W6111 |
B1014 |
$660 |
| RM250 |
2000 |
265 |
FM-SM250-C11 |
3 |
756MO6850 |
W5741 |
B1014 |
$550 |
| RM465/500 |
81-84 |
500 |
FM-SM465-C1 |
|
WOESNER |
|
B1014 |
$325 |
| RM85 |
2002+ |
105 |
FM-SM85-C3 |
2 |
806MO5300 |
W5980 |
B1012 |
$425 |
| RM85 |
2002+ |
100 |
FM-SM85-C2 |
2 |
806MO5200 |
W5980 |
B1012 |
$425 |
| RM85 |
2002+ |
92 |
FM-SM85-C1 |
2 |
806MO5000 |
W5980 |
B1012 |
$425 |
Yamaha
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| IT/YZ465 |
80-82 |
490 |
FM-YM465-C1 |
3 |
478MO8700 |
|
B1014 |
$325 |
| YZ/WR490 |
84-93 |
510 |
FM-YM490-C2 |
4 |
546MO8900 |
W5286 |
B1014 |
$425 |
| YZ125 |
2005+ |
144 |
FM-YM125-C12 |
2 |
846MO5800 |
W6331 |
B1013 |
$500 |
| YZ125 |
2005+ |
134 |
FM-YM125-C11 |
2 |
846MO5600 |
W6331 |
B1001 |
$450 |
| YZ125 |
2002-4 |
144 |
FM-YM125-C10 |
2 |
11317MO5801 |
W6140 |
B1013 |
$500 |
| YZ125 |
2002-4 |
134 |
FM-YM125-C9 |
2 |
797MO5600 |
W6140 |
B1001 |
$450 |
| YZ125 |
98-01 |
144 |
FM-YM125-C8 |
2 |
11317MO5801 |
W5677 |
B1038 |
$500 |
| YZ125 |
98-01 |
134 |
FM-YM125-C7 |
2 |
797MO5600 |
W5677 |
B1038 |
$450 |
| YZ125 |
94-96 |
144 |
FM-YM125-C6 |
2 |
11317MO5801 |
W5420 |
B1016 |
$500 |
| YZ125 |
94-96 |
134 |
FM-YM125-C5 |
2 |
647MO5600 |
W5420 |
B1016 |
$450 |
| YZ125 |
1993 |
130 |
FM-YM125-C4 |
2 |
629MO5700 |
W5354 |
B1016 |
$450 |
| YZ125 |
1992 |
130 |
FM-YM125-C3 |
2 |
594MO5700 |
W5354 |
B1016 |
$450 |
| YZ125 |
90-91 |
130 |
FM-YM125-C2 |
2 |
594MO5700 |
W5229 |
B1016 |
$450 |
| YZ125 |
86-88 |
134 |
FM-YM125-C1 |
2 |
559MO5750 |
W4904 |
B1016 |
$325 |
| YZ250 |
1999+ |
295 |
FM-YM250-C6 |
3 |
11320M7200 |
|
B1003 |
$660 |
| YZ250 |
1999+ |
265 |
FM-YM250-C5 |
3 |
804MO6850 |
|
B1003 |
$550 |
| YZ250 |
95-98 |
265 |
FM-YM250-C4 |
3 |
677MO7000 |
W5467 |
B1014 |
$550 |
| YZ250 |
92-94 |
265 |
FM-YM250-C3 |
3 |
677MO7000 |
W5168 |
B1014 |
$550 |
| YZ250 |
88-91 |
265 |
FM-YM250-C2 |
3 |
605MO7000 |
W5168 |
B1014 |
$375 |
| YZ250 |
83-87 |
265 |
FM-YM250-C1 |
3 |
560MO7000 |
W5128 |
B1014 |
$375 |
| YZ490 |
1983 |
510 |
FM-YM490-C1 |
4 |
478MO8900 |
W4055 |
B1014 |
$425 |
| YZ80 |
93-01 |
104 |
FM-YM80-C2 |
2 |
767MO5250 |
W5983 |
B1012 |
$425 |
| YZ80 |
93-01 |
92 |
FM-YM80-C1 |
2 |
805MO4950 |
W5983 |
B1012 |
$400 |
| YZ85 |
2002+ |
92 |
FM-YM85-C1 |
2 |
805MO4950 |
W5983 |
B1012 |
$400 |
| YZ85 |
2002+ |
104 |
FM-YM85-C2 |
2 |
767MO5250 |
W5983 |
B1012 |
$425 |
Husqvarna
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| CR/WR125 |
99-011 |
144 |
FM-QM125-C1 |
2 |
11317MO5801 |
W5905 |
B1013 |
$500 |
| CR/WR250 |
98-011 |
295 |
FM-QM250-C1 |
3 |
850MO7200 |
W5906 |
B1003 |
$660 |
Gas Gas
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| 125EC/MC |
2000+ |
144 |
FM-GM125-C1 |
2 |
11317MO5801 |
|
B1038 |
$550 |
| 250MC/EC/SM |
97-08 |
265 |
FM-GM250-C1 |
3 |
614MO6850 |
|
B1003 |
$500 |
KTM
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| 125SX/C |
2002-6 |
134 |
FM-KTM125-C3 |
2 |
836MO5600 |
W5972 |
B1013 |
$550 |
| 125SX/C |
2002-6 |
144 |
FM-KTM125-C4 |
2 |
836MO5800 |
W5972 |
B1013 |
$550 |
| 125SX/C |
2001 |
134 |
FM-KTM125-C1 |
2 |
836MO5600 |
W5760 |
B1013 |
$550 |
| 125SX/C |
2001 |
144 |
FM-KTM125-C2 |
2 |
836MO5800 |
W5760 |
B1013 |
$550 |
| 150SX |
2007+ |
155 |
FM-KTM150-C1 |
2 |
836MO5800 |
W6633 |
B1013 |
$550 |
| 200E/MXC |
98-02 |
212 |
FM-KTM200-C1 |
3 |
770MO6600 |
W5907 |
B1082 |
$500 |
| 200E/MXC |
2003+ |
212 |
FM-KTM200-C2 |
3 |
770MO6600 |
W6141 |
B1082 |
$500 |
| 200XC-W |
2006-10 |
212 |
FM-KTM200-C3 |
3 |
770MO6600 |
W6141 |
B1082 |
$500 |
| 250S,E,MX |
2000-5 |
295 |
FM-KTM250-C2 |
3 |
850MO7200 |
W5908 |
B1037 |
$600 |
| 250S,E,MX |
96-99 |
295 |
FM-KTM250-C1 |
3 |
850MO7200 |
W5327 |
B1037 |
$600 |
| 300 |
91-94 |
310 |
FM-KTM300-C1 |
3 |
631MO7300 |
W5328 |
B1037 |
$600 |
| 300 |
95-03 |
310 |
FM-KTM300-C2 |
3 |
712MO7300 |
W5328 |
B1037 |
$600 |
| 50SX |
2009+ |
58 |
FM-KTM50-C2 |
2 |
874MO4150 |
W6259 |
B1041 |
$375 |
| 50SX |
2001-8 |
58 |
FM-KTM50-C1 |
2 |
803MO4150 |
W6259 |
B1041 |
$375 |
| 65SX |
99-08 |
72 |
FM-KTM65-C1 |
2 |
746MO4700 |
W6259 |
B1042 |
$375 |
TM
| Model | Year | Displacement | Cylinder Part # | Bore(in) | Piston | Gasket | Bearing | Price |
| 125 |
98-07 |
144 |
FM-TM125-C1 |
2 |
11317MO5801 |
|
B1013 |
$500 |
| 250 |
98-011 |
265 |
FM-TM250-C1 |
3 |
8171D210 |
|
B1003 |
$550 |
HOW TO GET STARTED
Just CLICK & PRINT a copy of the Service Order Form and follow the directions on packaging your parts for shipping. All the options are listed for services, powerband choices, fuel types, spare parts, shipping methods, and payment options. Click here for the service order form
ALL INTERNATIONAL ORDERS GET OUR RUSH SERVICE FOR FREE!
