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Engine

Model: 05-0017 Stock: 23
Piston 1st.Oversize (+ 0.25mm.) & piston pin & clips - NOTE: Kit does not include rings - they must be purchased separately (05-0018). Fits: 650's 1974-84 OEM Ref.# 447-11635-01..
$98.50
Ex Tax:$89.55
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Model: 05-0019 Stock: 47
Piston 2nd. Oversize (+0.50mm.) + piston pin & clips - NOTE: Kit does not include rings - they must be purchased separately (05-0020). Fits: 650's 1974-84 OEM Ref.# 447-11636-01..
$98.50
Ex Tax:$89.55
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Model: 05-0021 Stock: 14
Piston 3rd. Oversize (+ 0.75mm.) + piston pin & clips - Fits: 650's 1974-84 OEM Ref.# 447-11637-01..
$98.50
Ex Tax:$89.55
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Model: 05-0013 Stock: 10
Piston - Stock/Standard Size + piston pin & clips - Fits: 650's 1974-84 OEM Ref.# 447-11635-01-96 Quality made If you want to replace or go back to the stock 650cc piston, this is what you need...
$99.50
Ex Tax:$90.45
Model: 18-0749 Stock: 77
Premium Base Gasket for Big Bore 750cc cylinders ( 85mm. OD. sleeve size). Stock type stud holes (dowel pins are used). Fits: Big Bore Kit. Chemically treated gasket material makes improved seal...
$20.00
Ex Tax:$18.18
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Model: 05-0752 Stock: 38
Big bore (80mm.) Piston kit..
$145.50
Ex Tax:$132.27
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Model: 05-0754 Stock: 20
Replacement piston Ring Set to fit XS Performance 81mm. Pistons (#05-0753) Set = Rings for one 81mm.(1st. over) piston...
$58.00
Ex Tax:$52.73
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Model: 05-0753 Stock: 14
XS Performance 1st. oversize (81mm.) Forged Big Bore Piston Kit. Piston includes ring set for 1 piston, piston pin(1) and pin clips(2). Forged Piston features: 1. - Valve pockets cut for large valves. 2. - Mos2 treated piston skirts. 3. - Oil channel for enhanced wrist pin oiling. 4. - 20mm. piston ..
$155.00
Ex Tax:$140.91
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Model: 18-0854 Stock: 98
Base Gasket for Big Bore ( 860cc.) cylinders ( 91mm. OD. sleeve size ). No dowel pins are used on these special large cylinders. 10mm. stud holes. Fits: XS/TX's 1970-84 Special chemically treated gasket material makes improved seal. (no gasket cement to be used on this material)...
$18.00
Ex Tax:$16.36
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Model: 18-0750 Stock: 61
Big Bore Headgasket ( 750cc. - 82mm.). Fits: Our XS #05-0750 Big Bore Kits for 1974-84  447 type engines...
$62.00
Ex Tax:$56.36
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Model: 18-0853 Stock: 102
Big Bore (87mm.) Headgasket for extra large cylinders (approx. 860cc.) No dowel pins are used on these special large cylinders. 1972-84 type pattern. 10mm. stud holes. Special high quality gasket material...
$58.50
Ex Tax:$53.18
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Big Bore Kit - 80mm - XS650 - 1974-1984
Out Of Stock
Model: 05-0750
Color/Finish: Natural Material: Steel/Aluminum Specifications: 750cc Fits: 1974 - 1984 Yamaha XS650 Models (447 Engines) Notes:         Not Compatible With European 533 or Early Model 256 Engines         No Modifications To The Engine Cases Needed &nb..
$1,286.10
Ex Tax:$1,169.18
Out Of Stock
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