• Piston Ring Set - 4th. Oversize - 1.00mm. (for 1 Piston). OEM Ref.# 447-11610-40. Fits: TX/XS650's 74-84 (447 & 533 type engines) Note: 447 type rings interchange with European 533 rings but pistons do not. 447 rings do not interchange with original 256 rings used on 1970-73 models. Part #05-0024 $25.20 Ea.
  • Out of stock
    Piston 4th. Oversize (1.00mm.) + Piston Pin & Clips. OEM Ref.# 447-11638-01. Fits: 650's 1974-84 Note: Piston rings are not included in kit Part #05-0023 $45.46 Ea.
  • Piston Ring Set - 3rd. Oversize - 0.75mm. (for 1 Piston). OEM Ref.# 447-11610-30. Fits: TX/XS650's 74-84 (447 & 533 type engines) Note: 447 type rings interchange with European 533 rings but pistons do not. 447 rings do not interchange with the original 256 rings used on 1970-73 models. Part #05-0022 $20.20 Ea.
  • Out of stock
    Piston 3rd. Oversize (0.75mm.) + Piston Pin & Clips. OEM Ref.# 447-11637-01. Fits: 650's 1974-84 Note: Piston rings are not included in the kit Part #05-0021 $25.46 Ea.
  • Sale!

    Piston – Stock/Standard Size

    Original price was: $45.46.Current price is: $39.95.
    OEM Ref.# 447-11635-01-96. Fits: 650's 1974-84 If you want to replace or go back to the stock 650cc piston, this is what you need. Note: Piston rings are not included in kit Part #05-0013 $45.46 Set
  • Out of stock
    Stock 650cc. Cylinder Sleeve. Replaces damaged or worn out original sleeve so engine can go back to stock piston size (approx. 74.94mm. or 2.95" ) or any of it's oversizes. ID, OD, length and thickness dimensions are the same as original. Fits: All 1970-84 stock cylinder blocks. Note: After installation of sleeve into your cylinder, sleeve must be sized (bored/honed) to accept the pistons you are using. This operation should be performed by a competent professional machine shop Part #05-0758 $82.95
  • 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 Part #18-0854 $10.95
  • Big Bore (87mm.) Cylinder Head Gasket 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. Part #18-0853 $34.95
  • Piston Pin for our XS Forged Big Bore 750cc. Pistons. 20mm. piston pin is internally tapered to ends to reduce weight. Fits: 1974-84 447/533 XS Performance 80-81mm. Forged Pistons. Part #05-0749 $10.40 Ea.
  • Sale!

    81mm. Piston Ring Set

    Original price was: $29.80.Current price is: $24.80.
    Replacement Piston Ring Set to fit XS Performance 81mm. Pistons ( XS# 05-0753 ) Set = Rings for one 81mm. (1st. over) piston. Part #05-0754 $29.80
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