Piston Kit (2nd.oversize - 0.50mm.)

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Piston Kit (2nd.oversize - 0.50mm.)

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!
Part #05-0652
$119.95 CAD Kit
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Piston Kit (3rd.oversize - 0.75mm.)

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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!
Part #05-0653
$119.95 CAD Kit
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Piston Pin - (22mm. Dia.)

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Piston Pin - (22mm. Dia.), OEM Ref.# 256-11633-00, Made in Japan.

Fits: 256 type pistons - XS1, XS1B, XS2, TX650 1970-73 Only!
Part #05-0656
$16.95 CAD Ea
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Piston Pin Clips (Pk/2)

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Piston Pin Clips (Pk/2), OEM Ref.# 256-11634-00, Made in Japan.

FIts: 256 Pistons - XS1, XS1B, XS2, TX650 1970-73 Only!
Part #05-0657
$3.95 CAD Pk2
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Big Bore Cylinder and Piston Kit

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XS Performance

Big Bore Cylinder and Piston Kit

The Only complete bolt on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha

Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. The New Cylinder Block has longer fins matching the Head Fin Length.
Kit Fits: 1974-84 447 Type Engines

Kit Includes:

  1. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. Forged Big Bore (750cc.) Pistons. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. No modifications to engine cases needed.
  2. Forged 80mm. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. Forged 447 type Pistons feature:
    1. Valve pockets cut for large valves.
    2. Mos2 treated piston skirts.
    3. Oil channel for enhanced piston pin oiling.
    4. 20mm. piston pins that are internally tapered to ends for weight reduction.
    5. Lightweight 9:1 compression pistons. Assembly - Weight approx. 455 Grams.
  3. Big Bore Cylinder Head Gasket & Base Gasket.

Fitted with our XS Performance Camshaft, Dellorto Carbs, a free flowing Exhaust and Iridium spark plugs will result in about 65 Rear wheel Horsepower or more and 50 foot pounds of Torque.

Dyno Chart 1 Dyno Chart 2

Part #05-0750
$879.00 CAD Kit
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81mm. Forged Big Bore Piston Kit

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XS Performance
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 pins that are internally tapered to ends for weight reduction.
5. - Lightweight 9:1 piston assembly weight of approx. 340 Grams.

Fits to - 1974-84 - 447 type engines with Big Bore (750cc.) cylinders.
Part #05-0753
$139.95 CAD Kit
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81mm. Piston Ring Set

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XS Performance
Replacement Piston Ring Set to fit XS Performance 81mm. Pistons (XS#05-0753)

Set = Rings for one 81mm. (1st. over) piston.
Part #05-0754
$47.95 CAD Set
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80 mm. Piston Ring Set

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XS Performance
Replacement Piston Ring Set to fit XS Performance 80mm. Pistons.

Set = Rings for one 750cc. XS Performance 80mm. (Standard Size) Piston.
Part #05-0751
$47.95 CAD Set
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Big bore (80mm) Piston kit

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Big Bore (80mm) Piston Kit - for 750 Engine Kit for Yamaha XS650's
Part #05-0752
$139.95 CAD Kit
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Big Bore Cylinder Sleeve

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XS Performance
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.
Part #05-0757
$149.95 CAD Ea
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Piston Pin for Forged Big Bore Piston

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XS Performance
Piston Pin for our XS Performance 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
$16.95 CAD Ea
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Piston Pin Clips

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XS Performance
Piston Pin Clips (Pr.) to fit our Big Bore (750cc) forged pistons and Big Bore Kits.
20mm. size for 447/533 (1974-84) type engines only.
Part #05-0748
$4.95 CAD Pk/2
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Big Bore Cylinder Head Gasket ~ 750cc

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XS Performance
Big Bore Cylinder Head Gasket (750cc. - 82mm). Superior Quality by Athena.

Fits: Our XS Performance #05-0750 Big Bore Kits for 1974-84 447 type engines.
Part #18-0750
$49.95 CAD Ea
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Big Bore Cylinder Base Gasket ~ 750cc

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XS Performance
Premium Base Gasket for Big Bore 750cc Cylinders (85mm OD sleeve size).
Stock type stud holes (dowel pins are used). Chemically treated gasket
material makes improved seal.

Fits: Our #05-0750 Big Bore Kit.

Note: No gasket cement to be used on this material.
Part #18-0749
$18.95 CAD Ea
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Big Bore Cylinder Head Gasket ~ 860cc

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XS Performance
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
$69.95 CAD Ea
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Big Bore Cylinder Base Gasket ~ 860cc

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XS Performance
Base Gasket for Big Bore (860cc) Cylinders (91mm OD sleeve size).
No dowel pins are used on these special large cylinders. 10mm stud holes.
Special chemically treated gasket material makes improved seal.

Fits: XS/TX's 1970-84

No gasket cement to be used on this material
Part #18-0854
$21.95 CAD Ea
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Performance (Stock Bore) Cylinder Base Gasket

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XS Performance
Base Gasket for Stock Bore (650cc) Cylinders. Stock type stud holes
(dowel pins are used). Special chemically treated gasket material makes
improved seal. (no gasket cement to be used on this material).

Fits: XS/TX 650's 1972-84

Note: No gasket cement to be used on this material.
Part #18-0851
$17.95 CAD Ea
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Big Bore Oversize Piston Ring Set - 6th. Oversize

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Big Bore Oversize Piston Ring Set - 6th. Oversize - 1.50mm. (for 1 Piston).
For use with Big Bore 6th. over piston. Quality Made in Japan
on all new tooling.

Fits: TX/XS650's 74-84 (447 type engines)
Part #05-0036
$42.95 CAD Set
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Note: Stock cylinder bore size is usually about 75mm. Stock Piston size is around
74.945mm. and the standard size piston has .945 marked on its top (the "74." is
always dropped). Standard original piston size varies slightly so the piston may
also be marked .965 or otherwise. Standard bore clearance is 0.0020-0.0022 in.
(0.050-0.055mm.) Oversize pistons are marked in mm. A 1st. over piston is
marked 0.25 which is equivalent to 10 thousandths of an inch. 2nd OS is marked
0.50 etc. Top and 2nd. Ring End Gap (measured in cylinder) should be a minimum
of 0.008" and Oil rings should have a minimum gap of 0.012"

Piston - Stock/Standard Size

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Piston - Stock/Standard Size + Piston Pin & Clips. OEM Ref.# 447-11635-01-96.
Quality made in Japan on all new tooling.

Fits: 650's 1974-84

If you want to replace or go back to the stock 650cc piston, this is what you need.
Part #05-0013
$84.95 CAD Ea
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Piston Ring Set - Stock/Standard Size

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Piston Ring Set - Stock/Standard Size (for 1 piston). OEM Ref.# 447-11610-00-00.
Quality Made in Japan on all new tooling.

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.

If you want to go back to a stock 650cc piston, this is the ring set you will need.
If you want to replace rings on an original stock size piston this is what you need.
Part #05-0016
$42.95 CAD Set
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Stock 650cc. Cylinder Sleeve

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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
$149.95 CAD Ea.
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Piston 1st. Oversize

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Piston 1st. Oversize (0.25mm.) + Piston Pin & Clips. OEM Ref.# 447-11635-01.
Quality made in Japan on all new tooling.

Fits: 650's 1974-84
Part #05-0017
$84.95 CAD Ea
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Piston Ring Set - 1st. Oversize

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Piston Ring Set - 1st. Oversize - 0.25mm. (for 1 Piston). OEM Ref.# 447-11636-01.
Quality Made in Japan on all new tooling.

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 #05-0018
$42.95 CAD Set
Add to Cart

Piston 2nd. Oversize

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Piston 2nd. Oversize (0.50mm.) + Piston Pin & Clips. OEM Ref.# 447-11636-01.
Quality made in Japan on all new tooling.

Fits: 650's 1974-84
Part #05-0019
$84.95 CAD Ea
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Piston Ring Set - 2nd. Oversize

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Piston Ring Set - 2nd. Oversize - 0.50mm. (for 1 Piston). OEM Ref.# 447-11610-20.
Quality Made in Japan on all new tooling.

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 #05-0020
$42.95 CAD Set
Add to Cart

Piston 3rd. Oversize

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Piston 3rd. Oversize (0.75mm.) + Piston Pin & Clips. OEM Ref.# 447-11637-01.
Quality made in Japan on all new tooling.

Fits: 650's 1974-84
Part #05-0021
$84.95 CAD Ea
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Piston Ring Set - 3rd Oversize

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Piston Ring Set - 3rd. Oversize - 0.75mm. (for 1 Piston). OEM Ref.# 447-11610-30.
Quality Made in Japan on all new tooling.

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 #05-0022
$42.95 CAD Set
Add to Cart

Piston 4th. Oversize

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Piston 4th. Oversize (1.00mm.) + Piston Pin & Clips. OEM Ref.# 447-11638-01.
Quality made in Japan on all new tooling.

Fits: 650's 1974-84
Part #05-0023
$84.95 CAD Ea
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Piston Ring Set - 4th. Oversize

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Piston Ring Set - 4th. Oversize - 1.00mm. (for 1 Piston). OEM Ref.# 447-11610-40.
Quality Made in Japan on all new tooling.

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
$42.95 CAD Set
Add to Cart

Piston Pin - (20mm Dia.)

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Piston Pin - (20mm Dia.), OEM Ref.# 447-11633-00, Made in Japan.

Fits: 1974-84 XS/TX 650's
Part #05-0014
$13.95 CAD Ea
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Piston Pin Clips (Pk/2)

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Piston Pin Clips (Pk/2) for 447 Pistons, OEM Ref.# 93450-22027, Made in Japan.

Fits: 1974-84 XS/TX 650's
Part #05-0015
$4.95 CAD Pk/2
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Cylinder/Head Dowel Pins (Pk/2)

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Dowel Pins for Cylinder Head or Base - 14mm. OD x 16mm. Long.

Fits: All 650's 1970-84
Part #05-0740
$12.50 CAD Pk/2
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Cylinder Guide Bar Bolt (Pk/2)

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Chrome Cylinder Guide Bar Bolt (Pk/2). Bolt Passes thru cylinder guide bar nuts
located at Front/center of cylinder casting and secures cam chain guide bar to
cylinder casting (inside cam chain tunnel).

Fits: All 650's 1970-84
Part #49-0723
$1.95 CAD Pk./2
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Cylinder Guide Bar Nut (Pk/2)

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Chrome Cylinder Guide Bar Nut (Pk/2)

Fits: into Front/center of cylinder casting on All 650's 1970-84.
Part #49-0722
$4.50 CAD Pk./2
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650cc Replacement Cylinder and Piston Kit

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Big Fin Cylinder Block Fitted to Standard Size 650cc. Original type
pistons. Includes Cylinder Block, fitted Stock type cast pistons,
piston pins, clips, Head and base gasket and matching piston ring sets.

Kit Fits: 1974-84 447 XS/TX 650 Engines.

Start over at the original stock 650cc. bore size with the improved
cooling and good looks of our Big Fin cylinder.
Part #05-0659
$749.00 CAD Ea.
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Piston Pin Puller

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Piston Pin Puller with Adaptors (12.5, 15.75, 19, 22mm OD).
Easily Removes XS650 Piston Pins (20 & 22mm OD) Without Damage.
Part #35-9070
$39.95 CAD Ea
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