Engine

Engine

We are all aware of the importance of motor maintenance, and periodic tuning, especially related to the early motor design of the vertical XS650 twin. In the past OHC required valve adjustment along with cam chain adjustment. The old-style point and condenser ignition was certainly not to be overlooked.

If you are trying to get your XS650 power plant performing at its best, we have a large variety of Engine parts for you to choose from across many top brands such as the 750cc Big Bore Kit and Three Bond liquid gasket sealer.  Be sure to check out our selection of: XS650 Gaskets, Seals, Camshafts, Cam chains, Valves, Guides, Clutch transmission, Crankshaft rods and XS650 bearings, Pistons, Rings, Pins and clips, Cylinders, Oil pumps, Oil filters, and XS650 Fittings.  

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  1. Valve Stem Seals
    Part #
    01-0114
    Valve Stem Seals (Sold each) Made in Japan OEM Ref.# 341-12119-00/02Fits: All 650's 1970-84 Also fits: SR500 78-81, SR500 82-88, XT500 88, XT500 76-81, TT500 76-81, XV750 82, XV920 82-83, XV1000 83, XV750 81-83, XV1000 84-85, XV920 81-82, XV1000 82, XV920 83 
  2. Premium Valve Stem Seals (Pk/4)
    Part #
    01-0115
    Premium Valve Stem Seals. Use these with Our New #05-0025 XS Performance Cam(Also Web Cams) and matching XS Performance Valve Spring Sets.Seals are 0.85mm. shorter than our #01-0114 stem seals and this provides additional seal to valve cap clearance needed when using higher lift cams. 
  3. Cylinder Head Sealing Washers
    Part #
    01-0650
    Cylinder Head Sealing Washers - OEM Ref.# 90210-10004 (4 used per engine) Steel Head washers with internal seal. Used under 4 outer cylinder head crown nuts on all 650's. Note: Not included in gasket sets. OEM Made in Japan. 
  4. Cylinder Head Washers
    Part #
    01-0651
    Brass Cylinder Head Washers - Can replace all cylinder head sealing washers or all Head Nut Washers used on any 650. 22mm. OD x 10.5mm. ID x 4mm. Thick This is a replacement for OEM # 90210-10004-00, it is not the same part. Mikes XS part # 01-0650 is the equivalent OEM part. 
  5. Clutch pushrod shaft Bushing Yamaha XS650
    Part #
    01-2020
    Clutch pushrod shaft Bushing - Replaces original bushing inside of pushrod housing (transmission shaft) and brings clearances back to original. When stock clearances are too large the pushrod moves to the side and increases tearing stress on the pushrod seal. (See our catalog for detailed installation procedure). 
  6. Rivet Link for XS1 XS2 XS650 TX650 cam chain
    Part #
    01-8801
    Rivet Link for Tsubaki BF05T Cam Chain. (as used on XS/TX650's 1970-73).Made in JapanNOTE: May not fit to old original chains due to later chain dimension and design improvements made to strengthen cam chain. 
  7. Rivet Link Yamaha cam chain D.I.D. 219FTss
    Part #
    01-8802
    Rivet Link - D.I.D. 219FTss. Fits: #52-4008 Cam chain. Made in JapanNOTE: May not fit to old original chains due to later chain dimension and design improvements made to strengthen cam chain. 
  8. Tsubaki BF05M cam chain Rivet Master Link Yamaha XS650 SR500 XT500
    Part #
    01-8815
    Tsubaki BF05M Rivet Master Link Cam Chain replacement link XS650 (74-84), TX650 also fits: SR500 78-81, XT500 76-81see 52-4048 for cam chain 
  9. 10pc. Engine Oil Seal Kit Yamaha XS650 (1970 - 1983)
    Part #
    01-9010
    10pc. Engine Oil Seal kit - Superior Quality by original Japanese maker (Ars) Includes 2pc. of special triple lip cam seals. Fits: All 650's 1970 - 1983. Seals included in kit - Electric start to crank case seal, starter motor shaft seal, kick start seal, shift shaft seal, clutch push rod seal, transmission countershaf... 
  10. Clutch Pushrod Oil Seal
    Part #
    01-9019
    Clutch Pushrod Oil Seal - Made in Japan by original maker. Fits: 1970-84 650's OEM Ref.# 93102-08094/08118 (SD - 8-25-6) ArsNote: The Clutch pushrod seal is a chronic leaker.This seal was made to be replaced when the engine cases are split! It can be replaced without splitting the cases but it is tricky to drive it i... 
  11. Camshaft Seals
    Part #
    01-9020
    Camshaft Seals (Pk./2).  Made in Japan.  Fits 1970 thru 1983 Yamaha XS650.   The dimensions of the seal are 25-40-7.   
  12. Countershaft Oil Seal
    Part #
    01-9021
    Countershaft Oil Seal (Front sprocket Seal) Fits: 1970-84 650'sMade in Japan 
  13. Oil Seal - Starter motor to Crankcase
    Part #
    01-9022
    Engine Oil Seal - Starter motor to Crankcase OEM Seal #93102-34095 Ars SD34-46-10.5 Fits: All 1972-84 650's. 
  14. Oil Seal - Tach Drive
    Part #
    01-9023
    Engine Tachometer Drive Oil Seal OEM Seal #93104-07036 Ars SO 7-13-4 HSFits: All 650's 1970-84 
  15. Oil Seal - Kickstarter shaft
    Part #
    01-9024
    Engine Kickstart Shaft Oil Seal OEM Seal #93102-25064 Ars SD 25-35-7-2HS Fits: All 650's 1970-84, TX750 73-74. 
  16. Oil Seal - Crankshaft
    Part #
    01-9025
    Engine Crankshaft Oil Seal on Alternator (LH) side.OEM Seal# 93102-25121/25090 Ars SD 25-40 9-L-1 HS Fits: All 650's 1970-84 
  17. Oil Seal - Shift Shaft
    Part #
    01-9026
    Engine Transmission Shift Shaft Oil Seal OEM Seal# 93109-14010 Ars SDD 14-24-6 Fits: All 650's 1970-84 
  18. Oil Seal - Starter Motor Shaft
    Part #
    01-9027
    Seal - Starter motor shaft OEM #93101-17047-00 SDO 17-28-8 HS Fits: All 650 starter motors 1972-84. 
  19. Valve Guide - Intake
    Part #
    01-9087
    Valve Guide - Intake - Standard size for 1970-84 XS/TX650's 
  20. Valve Guide - Exhaust
    Part #
    01-9088
    Valve Guide - Exhaust - Standard size for 1970-84 TX/XS650's 
  21. XS Valve Collets (keepers)
    Part #
    01-9093
    Valve Collets (keepers) (Pk/2) for Intake or Exhaust Valve -OEM # 341-12118-00 
    • Out of stock
  22. Valve Adjuster Screw
    Part #
    01-9096
    Valve Adjuster Screw with lock nut 32mm long 
  23. Gear Shift Rubber 1970-84 XS650
    Part #
    02-2470
    Gear Shift Rubber - Fits: 1970-84 650's OEM Ref.# 132-18113-01Also fits: RD's 
  24. Three Bond Gasket Cement
    Part #
    05-0001
    Gasket Cement - 3-Bond #4 (Yamabond #4) - 100gram tube - Gray semi-drying type. Use on gaskets except head gasket and on all surfaces without gaskets. 
  25. HP Connecting Rod Bearing, Washer & Pin  Kit Yamaha XS650
    Part #
    05-0003
    HP Connecting Rod Bearing, Washer & Pin KitFits: TX650A (1974) & All XS650 (75-84) Includes: Big end Bearing & Thrust Washers. A Superior quality part made in Japan on all new tooling. 
  26. Cam chain tensioner pivot arm Assembly Yamaha XS650
    Part #
    05-0004
    Cam chain tensioner pivot arm Assembly. Fits: XS/TX 650's 1974-84 OEM# Ref. 447-12220-00 
    • Out of stock
  27. High Performance Connecting Rod Kit - 447 type - Yamaha XS650
    Part #
    05-0005
    High Performance Connecting Rod Kit - 447 type ( 20mm. piston pin hole ) Fits:TX650A (1974) & All XS650 (75-84). Includes: Connecting Rod, Crank Pin, Thrust Washers & Special high load Big end Bearing. A Superior quality part made in Japan on all new tooling. 
  28. Front Cam Chain Guide Stopper 1970-84 XS1 XS2 XS650 TX650
    Part #
    05-0006
    Guide Stopper (Front cam chain guide bar)Fits: All TX/XS 650's 1970-84 - OEM Ref.# 256-12231-01 When black plastic bits start showing up in your oil its usually from the guide bar breaking up due to heat & old age. Replace it as the cam chain will next start to saw its way thru the aluminum support. 
  29. Camshaft Bearing Yamaha XS650
    Part #
    05-0007
    Camshaft Bearing - B16005 (Special C4 Clearance). 4 used per engine. Fits: All XS/TX650's 1970-84. Made in Japan by original supplier. 
  30. Crank Main Bearing Yamaha XS650
    Part #
    05-0008
    Crank Main Bearing - Drive end - RH (Ball Type) - B6306C3- Special. 1 Pc. used per engine. OEM# 93306-30604-00-00 Fits: 1970-84 650'sMade in Taiwan exclusively for Mikes XSReplaces the Discontinued and long unavailable Koyo brand original Bearing. 
  31. Crank Main Bearing Yamaha XS650
    Part #
    05-0009
    Crank Main Bearing (Special Roller type) - 3 used per engine. - Located center (2) and Left hand side of crankshaft (1). OEM# 93390-00003-00 - Made in Taiwan. Fits: All 1970-84 650's 
  32. Premium - Big end Bearing/Thrust Washer Set Yamaha XS650 256 or 447 engine
    Part #
    05-0011
    Premium Big End Bearing/Thrust Washer Set Kit Contains: 1Pc. #93310-62660 Standard Needle Bearing + 2pc. of # 90209-26014 Thrust Washers - Fits: All XS/TX 650's (1970-84) right or left side - ( 256 or 447 engines ) - Made in Japan 
  33. Crank Pin Yamaha XS650
    Part #
    05-0012
    Crank Pin - Fits: All XS/TX 650's (1970-84) right or left side, 256 or 447 type engines. Made in Japan 
  34. Piston - Stock/Standard Size Yamaha XS650
    Part #
    05-0013
    Piston - Stock/Standard Size + piston pin & clips - Fits: 650's 1974-84OEM Ref.# 447-11631-01-96 Quality made in Japan on all new tooling.If you want to replace or go back to the stock 650cc piston, this is what you need. OEM: 447-11631-01-96 / 363-11633-00-00 / 93450-22027-00 
  35. Piston Pin - (20mm. Dia.)
    Part #
    05-0014
    Piston Pin - (20mm. Dia.) -Fits:1974-84 XS/TX 650's OEM Ref.# 447-11633-00 Made in Japan 
  36. Piston Pin Clips for 447 pistons XS650
    Part #
    05-0015
    Piston Pin Clips (Pk./2) for 447 Pistons - Fits: 1974-84 XS/TX 650's - OEM Ref.# 93450-22027 Made in Japan 
  37. Piston Ring Set - Stock/Standard Size Yamaha XS650
    Part #
    05-0016
    Piston Ring Set - Stock/Standard Size (for 1 piston) Fits: TX/XS650's 74-84 (447 & 533 type engines - 1974-84). OEM Ref.# 447-11610-00-00 Quality Made in Japan on all new tooling.Note: 447 type Rings interchange with European 533 Rings but pistons do not.447 rings do not interchange with original 256 rings used o... 
  38. Piston 1st. Oversize Yamaha XS650 (0.25mm.)
    Part #
    05-0017
    Piston 1st. Oversize (0.25mm.) + piston pin & clips - Fits: 650's 1974-84 OEM Ref.# 447-11635-01 Quality made in Japan on all new tooling. 
  39. Piston Ring Set - 1st. Oversize - Yamaha XS650 - 447 and 533 engines ( 0.25mm)
    Part #
    05-0018
    Piston Ring Set - 1st. Oversize - 0.25mm. (for 1 piston) Fits: TX/XS650's 74-84 (447 & 533 type engines - 1974-84). OEM Ref.# 447-11610-10 Quality Made in Japan on all new tooling.Note: 447 type rings interchange with European 533 rings but pistons do not. 447 rings do not interchange with original 256 rings us... 
  40. 447 Piston 2nd. Oversize ( 0.50mm)
    Part #
    05-0019
    Piston 2nd. Oversize (0.50mm.) + piston pin & clips - Fits: 650's 1974-84 OEM Ref.# 447-11636-01 Quality made in Japan on all new tooling. 
  41. Piston Ring Set - 2nd. Oversize ( 0.50mm)
    Part #
    05-0020
    Piston Ring Set - 2nd. Oversize - 0.50mm. (for 1 piston) Fits: TX/XS650's 74-84 (447 & 533 type engines - 1974-84). OEM Ref.# 447-11610-20 Quality Made in Japan on all new tooling.Note: 447 type rings interchange with European 533 rings but pistons do not. 447 rings do not interchange with original 256 rings... 
  42. 447 Piston 3rd. Oversize
    Part #
    05-0021
    Piston 3rd. Oversize (0.75mm.) + piston pin & clips - Fits: 650's 1974-84 OEM Ref.# 447-11637-01 Quality made in Japan on all new tooling. 
    • Out of stock
  43. Piston Ring Set - 3rd Oversize
    Part #
    05-0022
    Piston Ring Set - 3rd.. Oversize - 0.75mm. (for 1 piston) Fits: TX/XS650's 74-84 (447 & 533 type engines - 1974-84). OEM Ref.# 447-11610-30 Quality Made in Japan on all new tooling.Note: 447 type rings interchange with European 533 rings but pistons do not. 447 rings do not interchange with original 256 rings... 
  44. 447 Piston 4th. Oversize
    Part #
    05-0023
    Piston 4th. Oversize (1.00mm.) + piston pin & clips Fits: 650's 1974-84OEM Ref.# 447-11638-01 Quality made in Japan on all new tooling. 
  45. Piston Ring Set - 4th. Oversize
    Part #
    05-0024
    Piston Ring Set - 4th. Oversize - 1.00mm. (for 1 piston) Fits: TX/XS650's 74-84 (447 & 533 type engines - 1974-84). OEM Ref.# 447-11610-40 Quality Made in Japan on all new tooling.Note: 447 type rings interchange with European 533 rings but pistons do not. 447 rings do not interchange with original 256 rings use... 
  46. Performance Camshaft and Valve Spring Kit Yamaha XS650
    Part #
    05-0025
    High Performance Camshaft and matching performance Valve Spring Kit.Cam fits 1974-84 447/533 type engines only.Sold as a kit Only: Camshaft has removable 36 tooth drive sprocket and kit includes special Valve Stem Seals, Valve Springs and clearance spring caps (No valve guide mods needed). Cams are machined from New B... 
  47. Shim for valve spring seat
    Part #
    05-0028
    Shim for valve spring seat - Original part used on cylinder head under the valve spring. Steel shim must be in place on head (often missing!) 1pc. fits below each valve spring assembly. 
  48. Performance Valve Spring Set Yamaha XS650
    Part #
    05-0029
    Performance Valve Spring Set (8 pc.) with steel caps (4 pc.)Special Valve caps provide maximum Cap to stem seal clearance.For use with the XS Performance #05-0025 Cam or Web cams or to replace original stock spring & cap sets.Fits: XS/TX650's 1970-84. 
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