Piston Kit (3rd.oversize - 0.75mm.) Kit includes: Piston for one cylinder, one Piston Pin (22mm), 2 Piston Pin Clips and Rings for one piston. Piston uses high quality 447 type rings and kit can be used as a set Only. Japanese made superior quality. Fits: 256 Engines 1970-73 only!

Piston Pin - (22mm. Dia.), OEM Ref.# 256-11633-00, Made in Japan. Fits: 256 type pistons - XS1, XS1B, XS2, TX650 1970-73 Only!

Piston Pin Clips (Pk/2), OEM Ref.# 256-11634-00, Made in Japan. FIts: 256 Pistons - XS1, XS1B, XS2, TX650 1970-73 Only!

Cylinder Sleeve for Big Bore (750cc) 80mm. Pistons. Note: Stock cylinder sleeves must be removed and the cylinder block Must be bored to accept this larger sleeve and then the new sleeve must be bored to accept the new larger big bore pistons.

Stock 22 Tooth 5th. Main Gear (located on final output shaft). Replacement for original gear - OEM Ref. # 256-17251-04. 5th gear commonly wears out and the engagement dogs causing the transmission to slip out of 5th gear. Replace this gear if you have this problem (cases must be split to install). Fits: XS650's 1978-1984 Only! Note: Yamaha changed the shape of transmission gear teeth from 78 on and this is indicated by lines cut into the crest of each tooth.

Clutch Adjuster Cover - Chrome - Covers adjuster screw in LH crankcase cover. Fits: 1971-84 650's

Sump Oil Filter - (New and Upgraded design with perforated metal to back up the filtering element). Stock original filters tear at low milage and allow unfiltered oil to flow to the oil pump. OEM Ref.# 256-13411-01. Fits: All 650's 1970-84

Oil Filter Screen - Fits in RH Engine Side Cover (Clutch Side) - Made in Japan - OEM Ref.# 256-13441-00. Fits: All 1970-84 XS/TX650's

Performance Oil Filter & Cooler Kit developed by Heiden Tuning of Holland. Kit uses common (Honda) replaceable paper element filter that provides better oil filtration than the stock filter screen. Kit installs directly to existing screen location and requires No modifications at all to install. Uses Stock gaskets. Aluminum Billet construction features a finned housing that also provides enhanced Oil Cooling. Kit is complete with Gaskets, Mounting Hardware and internal housing parts (Not shown) plus a filter element. No mods to install - improved filtration > Improved Cooling = Longer Engine Life Fits: All 650's 1970-84

Paper Oil Filter Element for XS#15-6504 Performance Oil Filter/Cooler Kit Filter is Honda OEM # 15410-KF0-305/315 / 15412-KF0-000/010 as is used on Honda XL/XR models.

Oil Level Sight Glass and Seal assembly. Original OEM Yamaha part - Ref.# 2H7-15361-00 Fits: All XS650's originally equipped with this sight glass in the RH side (Clutch) cover.

Drain Plug Crush Gaskets - (Pk/2) - Each Engine has 2 Drain Plugs. Replaces OEM# 256-15353-00.

Overhaul Gasket Set Fits: 1970-71 XS1/XS1b 650's

Tappet Cover O-Ring - Made in Japan by original supplier (Ars). Sold Each. Fibre gaskets can be used on all 650's, these O-Rings can be used only on engines with the O-ring groove in the tappet cover cap.

Tappet Cover Gasket (4 Hole) - One piece used on each engine. OEM Ref.#306-11198-00. Fits: All model XS650's from 1972-84 Note: Gasket can be used in place of O-Rings used on some later models.