Pro X

Pro X Piston Kit - 2-Stroke

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35 Questions
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Product Details
The MotoSport.com Pro-X Piston Kit - 2-Stroke includes one of each of the following components with the following attributes:

Pro-X Piston:

Important note:
This piston is for a stock sized bore. Please measure your cylinder to check clearance before ordering.

ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese and European engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your machine.

Most ProX pistons come with a coating. The O.E.M. style tin-coated pistons assist the wear-in process as when you first started the bike. ProX has developed a new skirt coating that not only assists the wear-in process, but also helps reducing friction after the wear-in. The black coating is made from a delicate mix of materials and will increase performance.
- Cast piston puts engine back to standard specs without boring or replacing cylinder.
- Interchanges directly with O.E.M. part.
- Piston kit comes complete with piston, rings, wrist pin and end clips.
Wiseco Needle Bearing:

The Wiseco Needle Bearing is a high quality replacement wrist pin bearing designed to withstand the harsh demands of racing. Wiseco built their needle bearing to meet or exceed O.E.M. specifications.

Cometic Top End Gasket Kit:

State-of-the-art gaskets is what Cometic has been doing since its inception in 1989. This comes from their dedication to constructing gaskets for the most demanding race circuits like AMA and NASCAR. Today's lightweight engines are producing more horsepower, higher cylinder pressure, clamp load and extreme temperatures. Cometic's commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance.

Cometic meets the needs of each specific gasket by using materials to match. Even the basic top end gasket kit features different materials for each gasket. The head gasket is constructed from non-asbestos, flexible graphite that is laminated to a stainless steel core. The manifold and base gaskets are constructed from non-asbestos nitride rubber-bound fiber. Cometic also includes copper gaskets where needed.

Cometic designs and builds their gaskets in the U.S.A.

Notes:
Order ONE KIT PER CYLINDER. Image is for reference only, actual Kit may vary based on contents and fitment.
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Pro X Piston Kit - 2-Stroke Review
35 Questions about the Pro X Piston Kit - 2-Stroke
Fitment

# Part Numbers for the Pro X Piston Kit - 2-Stroke

Gasket Kit

Product Variant	Manufacturer Part #
105 SXS Kit SXS13105000	C3637-CL77
42mm Bore	C7262
43mm Bore	C7014
51mm Bore	C7932-CL77
52mm Bore	C7315-CL77
54.5mm Bore	C3543
54mm Bore	C7709
56mm Bore	C7694-CL77
68.5mm Bore	C7197
68mm Bore	C7063
69.5mm Bore	C7350
Pro X Piston Kit - 2-Stroke	C7760, C7859, C7778, C7508, C7120, C7112, C7136, C7779, C7467, C3099, C7064-CL77, C7065-CL77, C7123, C7156-CL77, C7280, C7505, C7054, C7857, C7349, C7853, C7936, C3105, C7084-CL77, C7139, C7158, C7399, C7855, C7113, C7250, C7337, C7507, C7137, C7851, C3211, C7292-CL77, C7295, C3416, C7678, C7757, C7181, C3085, C7115, C7394, C7191, C3089, C7015-CL77, C7016, C7116, C7020, C7003, C7126, C7392, C7762, C7921, C7203, C7241-CL77, C7393, C7040, C7764, C7861, C7269, C3096, C7041, C7135, C7155, C7047, C7154, C7501, C7682, C7030, C7031, C7391, C7011, C7012, C7013, C7019, C7029, C7043, C7045-CL77, C7046, C7087, C7088-CL77, C7089, C7098, C7099, C7108-CL77, C7117-CL77, C7133, C7242, C7251, C7257, C7258, C7259, C7333, C7384, C7416, C7423, C7456, C7690, C7816, C7386, C7942, C7943-CL77, C3222, C7009-CL77, C7010-CL77
Stock	C3636, C3623, C3606, C3607, C3731

Needle Bearing

Product Variant	Manufacturer Part #
Pro X Piston Kit - 2-Stroke	B1000, B1001, B1003, B1004, B1006, B1008, B1012, B1013, B1014, B1016, B1022, B1036, B1038, B1041, B1043, B1080, B1082, B1037, B1042

Piston

Product Variant	Manufacturer Part #
A Piston / 53.95mm	01.2232.A
Oversized / 47.5mm / +.50mm	01.2008.050
Oversized / 48mm / +1.00mm	01.2008.100
Oversized / 49mm / +1.50mm	01.3111.150
Oversized / 50.5mm / +.50mm	01.3180.050
Oversized / 51.5mm / +1.50mm	01.3180.150
Oversized / 51mm / +1.00mm	01.3180.100
Oversized / 66.5mm / +.50mm	01.1300.050, 01.1309.050, 01.4286.050
Oversized / 67.5mm / +1.50mm	01.1300.150, 01.1309.150, 01.4286.150
Oversized / 67mm / +1.00mm	01.1300.100, 01.1309.100, 01.4286.100
Oversized / 68mm / +2.00mm	01.1300.200, 01.1309.200, 01.4286.200
Oversized / 89.25mm / +.25mm	01.1408.025
Oversized / 89.5mm / +.50mm	01.1408.050
Oversized / 89.75mm / +.75mm	01.1408.075
Oversized / 90.25mm / +1.25mm	01.1408.125
Oversized / 90.5mm / +1.50mm	01.1408.150
Oversized / 90mm / +1.00mm	01.1408.100
Oversized / 91mm / +2.00mm	01.1408.200
Stock	01.1111.B, 01.1113.B-CL77, 01.1208.A2, 01.1218.A2, 01.1225.B, 01.1315.A1, 01.1320.A1, 01.1323.B, 01.1325.A1, 01.1408.000, 01.4100.B, 01.4022.B, 01.4108.B, 01.4216.B, 01.4221.B, 01.4223.B, 01.4285.B, 01.4322.B, 01.4325.B, 01.4408.B, 01.6012.B, 01.6022.B, 01.6029.B, 01.6219.B, 01.6226.B, 01.6220.B, 01.6228.B, 01.6322.B, 01.6343.B, 01.6394.B, 01.3111.000, 01.3122.B, 01.3214.B, 01.3220.B, 01.3224.B, 01.3310.B, 01.3320.B, 01.2109.B-CL77, 01.2114.B, 01.2211.B, 01.2215.B, 01.2217.B, 01.2224.B, 01.2225.B, 01.2314.B, 01.2321.B, 01.1309.000, 01.1300.000, 01.3180.000, 01.3001.000
Stock Bore / 39.46mm / A	01.6012.A
Stock Bore / 39.48mm / C	01.6012.C
Stock Bore / 42.95mm / A	01.4100.A
Stock Bore / 44.45mm / A	01.4022.A
Stock Bore / 44.47mm / C	01.4022.C
Stock Bore / 44.48mm / D	01.4022.D
Stock Bore / 44.96mm / A	01.6022.A, 01.6029.A
Stock Bore / 44.98mm / C	01.6022.C, 01.6029.C
Stock Bore / 44.99mm / D	01.6029.D
Stock Bore / 45.94mm / B	01.2107.B
Stock Bore / 45.95mm / B	01.1110.B
Stock Bore / 45.95mm / C	01.2107.C
Stock Bore / 45.96mm / C	01.1110.C
Stock Bore / 45.96mm / D	01.2107.D
Stock Bore / 46.95mm / A	01.4118.A, 01.6105.A
Stock Bore / 46.95mm / C	01.2109.C
Stock Bore / 46.96mm / B	01.6105.B, 01.4118.B
Stock Bore / 46.96mm / C	01.1111.C
Stock Bore / 46.96mm / D	01.2109.D
Stock Bore / 46.97mm / C	01.4118.C, 01.6105.C
Stock Bore / 46.98mm / D	01.4118.D, 01.6105.D
Stock Bore / 47.44mm / A	01.2114.A
Stock Bore / 47.46mm / C	01.1113.C, 01.2114.C
Stock Bore / 47.94mm / A	01.3122.A, 01.4108.A
Stock Bore / 47.96mm / C	01.3122.C, 01.4108.C
Stock Bore / 47.97mm / D	01.4108.D
Stock Bore / 47mm	01.2008.000
Stock Bore / 48.45mm / A	01.4121.A
Stock Bore / 48.46mm / B	01.4121.B
Stock Bore / 48.47mm / C	01.4121.C
Stock Bore / 52.45mm / A	01.4194.A, 01.4195.A
Stock Bore / 52.46mm / B	01.4194.B, 01.4195.B
Stock Bore / 52.47mm / C	01.4194.C, 01.4195.C
Stock Bore / 53.93mm / A	01.1208.A
Stock Bore / 53.94mm / A	01.1208.A1, 01.1218.A1, 01.1222.A, 01.1225.A, 01.2215.A, 01.2224.A, 01.3214.A, 01.3220.A, 01.6220.A, 01.6226.A
Stock Bore / 53.95mm / A	01.2217.A, 01.2225.A, 01.3224.A, 01.4216.A, 01.4223.A
Stock Bore / 53.95mm / B	01.1222.B, 01.4213.B
Stock Bore / 53.96mm / A	01.4218.A, 01.4221.A
Stock Bore / 53.96mm / C	01.1208.A3, 01.1218.A3, 01.1222.C, 01.1225.C, 01.2215.C, 01.2224.C, 01.3214.C, 01.3220.C, 01.4210.C, 01.4213.C, 01.6220.C, 01.6226.C
Stock Bore / 53.97mm / C	01.2217.C, 01.2225.C, 01.3224.C, 01.4216.C, 01.4223.C
Stock Bore / 53.97mm / D	01.1218.A4, 01.1222.D, 01.1225.D, 01.2224.D, 01.3214.D, 01.3220.D, 01.4210.D, 01.4213.D, 01.6220.D, 01.6226.D
Stock Bore / 53.98mm / C	01.4218.C
Stock Bore / 53.98mm / D	01.2217.D, 01.2225.D, 01.4216.D
Stock Bore / 53.99mm / D	01.4218.D
Stock Bore / 54.19mm / A	01.6219.A
Stock Bore / 54.21mm / C	01.6219.C
Stock Bore / 54.22mm / D	01.6219.D
Stock Bore / 55.94mm / A	01.6228.A
Stock Bore / 55.96mm / C	01.6228.C
Stock Bore / 55.97mm / D	01.6228.D
Stock Bore / 55.98mm / E	01.6228.E
Stock Bore / 57.94mm / A	01.6237.A
Stock Bore / 57.95mm / B	01.6237.B
Stock Bore / 57.96mm / C	01.6237.C
Stock Bore / 63.94mm / A	01.6249.A
Stock Bore / 63.95mm / B	01.6249.B
Stock Bore / 63.96mm / C	01.6249.C
Stock Bore / 63.97mm / D	01.6249.D
Stock Bore / 65.94mm / A	01.4285.A
Stock Bore / 65.96mm / C	01.4285.C
Stock Bore / 65.97mm / D	01.4285.D
Stock Bore / 66.34mm / A	01.1315.A-CL77, 01.1320.A, 01.1323.A, 01.1325.A, 01.3320.A, 01.6319.A, 01.6322.A, 01.6343.A
Stock Bore / 66.35mm / A	01.2321.A
Stock Bore / 66.35mm / B	01.6319.B
Stock Bore / 66.36mm / B	01.1315.A2, 01.1320.A2, 01.1325.A2
Stock Bore / 66.36mm / C	01.3320.C, 01.4322.C, 01.4325.C, 01.6319.C, 01.6322.C, 01.6343.C
Stock Bore / 66.37mm / B	01.1315.A3
Stock Bore / 66.37mm / C	01.1320.A3, 01.1325.A3, 01.2321.C
Stock Bore / 66.37mm / D	01.1323.D, 01.4322.D, 01.4325.D, 01.6343.D
Stock Bore / 66.38mm / D	01.1315.A4, 01.2321.D
Stock Bore / 66.94mm / A	01.3311.B
Stock Bore / 66.95mm / C	01.3310.C, 01.3311.C
Stock Bore / 66.96mm / D	01.3310.D, 01.3311.D
Stock Bore / 66.97mm / E	01.3310.E
Stock Bore / 67.36mm / C	01.4306.C
Stock Bore / 67.37mm / D	01.4306.D-CL77
Stock Bore / 67.44mm / A	01.6317.A
Stock Bore / 67.45mm / B	01.6317.B
Stock Bore / 67.46mm / C	01.6317.C
Stock Bore / 71.94mm / A	01.6387.A, 01.6388.A, 01.6394.A-CL77, 01.6396.A
Stock Bore / 71.95mm / B	01.6387.B, 01.6388.B, 01.6396.B
Stock Bore / 71.96mm / C	01.6387.C, 01.6388.C, 01.6394.C, 01.6396.C
Stock Bore / 85.94mm / A	01.4408.A

WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.

Pro X Piston Kit - 2-Stroke

Quantity

Product Details

Pro-X Piston:

Important note:

Wiseco Needle Bearing:

Cometic Top End Gasket Kit:

Notes: