Spares for BSA WM20

This is a special page, solely listing spares for BSA WM20. Parts are genuine unless stated reproduction.

Spares for other WW2 Military motorcycles can be found here

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WM20 GEARBOX ,GOOD CONDITION

GEARBOX , CASES CLEANED AND INTERNALS SEEM GOOD .

ONLY TESTED FOR 4 GEARS ON BENCH NOT RUNNING BIKE

PETROL CAP -ENOTTS .

2 holes added to wing nut ,often done to aid locking up .

STEARING STEM AND YOKE 66-5144

USED , APPEARS STRAIGHT , STORED FOR YEARS , GOOD THREAD WITH NUT

DU42 SHELL

LUCAS DU42 WW2 HEADLIGHT SHELL WITH SWITCH PLATE

VERY GOOD CONDITION HAS SPRING FOR CLIP BUT NOT CLIP

SILENCER IN CHROME . AS NEW

STORAGE USE ONLY ,GOOD CONDITION

CRANK . GOOD CONDITION

GOOD SHAFTS AND SPLINES . SOME SIDE PLAYIN ROD

BSA M20 ENGINE PLATE SET

FRONT ENGINE PLATE WITH CORRECT BOLTS

NICE TO SEE SOME GENUINE BOLTS

CRANKCASE SET – EARLY WM20.

HAD REPAIR TO TIMING CHEST -VERY WELL DONE.INCLUDES MAG/DYNO STRAPS

BRAKE ROD SUITABLE FOR MANY BIKES

CAME FITTED TO BSA WM20 . NOT CORRECT FOR BUT WORKED.

BSA M20 VALVE LIFTER

EXHAUST VALVE LIFTER ASSEMBLY -COMPLETE

GOOD -USED - VALVE LIFTER -A MUST HAVE PART FOR YOUR BIKE .

BSA STD M20 BARREL

BARREL AND PISTON -STD AS NEW FINS

BARREL IS 82MM USEABLE AS IS . PISTON FORIEGN . EXCELLENT BARREL. A1 CONDITION.

USED EXHAUST PIPE – FITS !

USED,RUSTY BUT WILL CLEAN UP. NOT CHROMED .

BSA PRE WAR M20 KICKSTART IN CHROME

PRE WAR CHROME KICKSTART. BSA PILED ARMS MARKED.

JUST PRE WAR USED ON KM AND MAYBE DELUX MODELS

bsa wm20 gearbox

gearbox – good condition -working .

ready to fit box . TAKEN FROM RUNNING BIKE THAT WE TESTED.

PETROL TANK PROTECTORS . DATED. MODERN .4 ONLY

CAN BE MADE TO FIT MOST TANKS . SAVES SPILLAGE ON YOUR TANK.

“KING DICK” 1939 A.M STAMPED 4″ ADJUSTABLE SPANNER

THIS IS A PRECISION MADE TOOL FROM FAMOUS COMPANY . REAL QUALITY PART. ALL MOTORCYCLE TOOLKITS.

PENNANT CHAIN SPLITTING TOOL. PART OF MOTORCYCLE TOOL KIT

USED ,WORKING 'PENNANT" SPECIFIED FOR BSA AND OTHER MAKES

SCREWED PLUG WM20 TIMING COVER

TIMING COVER WITH SCREW IN PLUG , GOOD CONDITION

EARLY COVER GIVES ACCESS TO MAGNETO PINION WITHOUT HAVING TO REMOVE COVER USED ON K M , DELUX AND MACHINES IN DESERT .

BSA 1940 COMPLETE WM20 FRAME

FRAME COMPLETE , EARLY 1940 WITH V5C .

THIS FRAME IS FROM CONTRACT C5610. FOR 4000 BIKES . ORIGINAL REAR FRAME

REAR BRAKE PEDAL SHAFT 66-7029

GOOD WITH CORRECT NUT

REAR BRAKE PEDAL WITH BUSH

STRAIGHT ,GOOD CONDITION PEDAL

BSA WM20 IRON HEAD VGC

WM20 IRON HEAD EXCELLENT CONDITION WITH BOLT SET

THIS HAS 98% OF FINS , 1 SMALL AREA DAMAGE . THICK FINS .

BSA WM20 FRONT FENDER

FRONT MUDGUARD . GOOD CONDITION

NO HOLES OR BAD DENTS . . SOUND .

LYCETT BADGED PILLION SADDLE, GOOD CONDITION

4 SPRING PILLION FROM BSA. WILL FIT OTHER BIKES . SADDLE COVER VGC . BEEN RESTORED ?

VINTAGE REAR NUMBER PLATE

VINTAGE REAR NUMBER PLATE , GOOD CONDITION

THIS IS NOT MODERN PART . MAY BE POST WAR BUT WILL LOOK GOOD ON ANY WW2 BIKE, POST WAR LIGHT .

BSA M20 SEIES EXHAUST PIPE .

EXHAUST PIPE – STORAGE USE ONLY

VERY GOOD CONDITION . NEVER USED .

BSA M20 SILENCER

SILENCER- STORAGE USE ONLY

POST WAR , SOME BLEMISHES BUT NEVER USED M20 SILENCER

BSA WM20 REAR WHEEL ORIGINAL

REAR WHEEL , GOOD HUB ,SPOKES AND USEABLE RIM

GOOD TO HAVE IF YOUR WHEEL NEEDS ATTENTION

15-7160 FRONT MUDGUARD STAY PLATES X 2. 15-7160

SO OFTEN MISSING ,SPREADS THE LOAD AROUND FIXING AND HELPS LOCATE FRONT STAY

bsa wm20 toolbox

ww2 toolbox ready to fit and use .unrestored.

has all fittings . knob is not original and hole has been enlarged to take it . good for users not for restored bikes .

FORKS, COMPLETE SET .VERY GOOD AND STRAIGHT SET. 42-45. 66-5016

CHECKED BY JAKE ROBBINS . MISSING TOP HANDLE BAR CLAMPS ONLY.

BSA WM20 COMPLETE REAR CHAINWHEEL

REAR BRAKE PLATE AND CHAINWHEEL ASSEMBLY . COMPLETE WITH STUB AXLE

THE CHAINWHEEL IS IN GREAT CONDITION , TEETH VERY GOOD .READY TO FIT WITH BRAKE LEVER AND ADJUSTERS AND REAR BOLTS.

MATCHLESS 1941 G3L FRAME

REAR WHEEL TORQUE ARM .

RBOTTOM CHAINRUN ATTATCHES TO THIS .

FRONT STAY BSA WW2 M20

FRONT STAND 42-45 WITH STRENGTHEND RT PART

GOOD ORIGINAL CONDITION READY TO FIT

BSA RIGID REAR FRAME WW2

REAR FRAME, 1942 -45 WITH FOOTREST LUGS

GOOD CONDITION REPAIRED SILENCER ATTACHMENT

RARE PRE-WAR BSA FRONT HUB _3240

RARE PRE WAR OR KM HUB WITH SPINDLE AND INTERNALS

TURNS ,HAS NO PROVISION FOR LEFT SIDE SPEEDO BOX. CORRECT FOR ROD TYPE BREAKS

GEARBOX WM20 GREAT CONDITION ,WORKS WELL

TAKEN FROM RUNNING MACHINE .

SMITHS 80MPH SPEEDOMETER WITH TRIP .RESTORED

SMITHS SPEEDOMETER.80MPH WITH TRIP. RESTORED BY PHIL WOODS

NICE CIVILIAN SPEEDO. TAKEN OFF BSA WM20. WILL TAKE EXCHANGE ON YOURS

BSA SPEEDOMETER BRACKET

SPEEDOMETER BRACKET

GOOD CONDITION -READY TO FIT

BSA WM20 ENGINE PLATE SET

ENGINE PLATES WITH BOLTS

READY TO FIT . INCLUDES VALVE LIFTER CABLE SPECIAL BOLT

A M20 GEARBOX PLATE SET

GEARBOX PLATE SET WITH GEARBOX ADJUSTER BOLTS

ALSO GEARBOX/FRAME BOLTS AND SPACERS

BSA WM20 REAR STAND

REAR STAND , U.K REPRO NOT GENUINE- BARE

REPRO STAND HAS HAD REPAIR BY JAKE ROBINS ,NOW VERY GOOD

BSA M20 STEARING DAMPER SET

STEARING DAMPER , COMPLETE SET ,VERY GOOD .

GOOD WORKING AND ORIGINAL TOP

BSA WB30 GEARBOX , RARE , COMPLETE

PART NUMBER 65-3048 FITTED TO 1940 B29 AND LATER WB40.

rear wheel bsa wm20

REAR WHEEL ,GOOD RIM , SPOKES AND HUB INTERNALS

THE 3 BOLTS HOLDING DRUM HAVE NOT BEEN TIGHT, CAUSING HOLES TO ELONGATE .. USEABLE BUT NOT BEST CONDITION. good bearings etc .

POST WAR NUMBER PLATE

USEFUL FOR THOSE WHO NEED NUMBER PLATES ,TOP BRACKETS HAVE CRACKS BUT EASY REOPAIR

ww2 Lucas du42 headlight shell

HEADLAMP SHELL- LUCAS DU42 WITH CLIP 6 1/2″ WW2

good condition du42 ready to fit

DRIVERS SADDLE -GENUINE .WITH TERRY SEAT COVER

COMES WITH SPRINGS AND CORRECT HEX PILLAR BOLTS FOR HEIGHT ADJUSTMENT

BSA M20 COMPLETE BRAKE PEDAL SET

REAR BRAKE FOOT PEDAL WITH FULCRUM PIN,PEDAL STOP AND SPRING

READY TO FIT COMPLETE ASSEMBLY LESS ROD

bsa wm20 pillion footrests

PILLION FOOTRESTS – PAIR

GOOD CONDITION RESTS

bsa m20 head steady

head steady -66-421

fitted to all wm20 and postwar m series

REAR BRAKE STOP PLATE BSA WM20

REAR BRAKE PEDAL STOP PLATE 66-7033

WITH SPRING . GOOD CONDITION

GEARBOX TO FRAME SPACER SET

REAR GEARBOX TO FRAME SPACER SET

GOOD CONDITION PARTS

bsa m20 gearchange lever

GEAR CHANGE FOOT LEVER

in desert colour-good splines

gearbox adjuster fixed part bsa wm20

GEARBOX ADJUSTER ANCHOR

fits on gearbox plates and allows tie rod to adjust

bsa wm20 gearbox adjuster tie rod

GEARBOX ADJUSTER TIE ROD

good condition part.

bsa timing cover WW2

WW2 TIMING COVER .

good condition we have replaced quill with NOS part

BSA M20 FOOTREST SET

FOOTREST SET -STRAIGHT AND COMPLETE

COMES WITH PRIMARY CASE SPACERS

BRASS CONVOY LIGHT CONNECTOR ASSEMBLY -NEW

NEW – REAR TAIL LIGHT WITH CONNECTOR ASSEMBLY 4 PARTS AS ORIGINAL

THESE ARE VERY ACCURATELY MADE BRASS COINNECTORS . THE PROPER FITTING FOR CONVOY LIGHT AT REAR

MAG/DYNO DRIVE SPROCKET .

GOOD CONDITION MAGNETO SPROCKET FOR M20

bsa wm20 original handelbars

handelbars -genuine set wm20 .

used and useable ,pretty straight

LUCAS HEADLAMP DU42 PANEL AND WW2 SWITCH

LUCAS DU42 PANEL WITH GOOD 4 POSITION MILITARY SWITCH

WORKING PART ,FITS ALL WW2 MOTORCYCLES WITH SMALL DU42 HEADLIGHT UNIT .

wm20 frame complete with v5c

FRAME COMPLETE WITH V5C.may split .

EARLY FRONT FRAME good straight . later rear 42 onwards .

bsa wm20 clutch centre castellated nut

clutch center nut . genuine , used

useable part , thread takes up well , often stripped !

bsa m20 gear indicator

gearbox, gear position indicator .

often missing part . good used condition

bsa wm20 kickstart pedal

kickstarter pedal .

well used ,pitted , good for unrestored bike

engine /gearbox plate bolts x 4

original bsa fittings

1939 bsa oil tank

early 39/40 oil tank with correct lid

showing original khaki paint as used at dunkirk

m20 rear brake arm

REAR BRAKE ARM

what can I say ! its a brake arm , rear wheel :)

BSA WM20 RUNNING WW2 ENGINE

WM20 20836 ,1940.EARLY,GOOD RUNNING ENGINE .DUNKIRK PERIOD.

PULLED WELL , NO SMOKE ,REMOVED HEAD TO SHOW +20 ,

bsa wm20 steering damper .

STEERING DAMPER ,COMPLETE SET . GOOD CONDITION .

has new hand knob , made by bsa owner . excellent .

genuine ,used ,clutch plates .

some of these are quite useable .

inner primary case complete bsa wm20

inner primary case with sliding plate .

well used inner is not 100% flat were its had knocks but with correct thick gate it will seal .

m20 clutch chainwheel used

clutch chainwheel, well used

useable, would get you out of trouble ,1 chipped tooth . correct rollers .

clutch plate center

clutch center ,used

from same working clutch .

clutch plate with good studs

clutch driving plate with 6 good studs

seems to be flat and useable , good studs

clutch center spring

clutch spring , original ,used

this clutch was working so useable .

bsa m20 clutch parts

clutch sleeve with nut , good thread .

used clutch part . useable condition .

w.d convoy lamps post war

PAIR OF W.D REAR CONVOY LAMPS .

nice pair to light up rear number plates.

w.d rear convoy lamp

w.d rear convoy lamp . not ww2

nice w.d tail light. looks good on rear number plates .

m20 drive set

drive set , good spring etc

used good working shock absorber set

bsa magneto cable

magneto cable

good , used , magneto cable

KICK START LEVER .

KICK START LEVER .

GOOD CONDITION LEVER

BSA PILLION SEAT MOUN

BSA PILLION MOUNT PLATE.

HARD TO FIND REAR SEAT MOUNT THAT WAS MAINLY USED WITH FULL PANNIER SETS

WAR ARMY NUMBER PLATE

POST WAR ARMY NUMBER PLATE .with modern tail light

these post war plates were to take the 2 number ,2 letter , 2 number w.d identification .

M20 OIL SUPPLY PIPES . RARE .

N.O.S OIL SUPPLY/RETURN PIPES ,COMPLETE

RARE FIND !! N.O.S . STORED 70+YEARS AND RUBBER FANTASTIC ,NOT PERISHED , ORIGINAL CADNIUM PLATE .

Gearbox connecting bolt, rear 66-4168

Gearbox connecting bolt, rear 66-4168

Specialised adjuster bolt

N.O.S front hub felts. L.H

N.O.S front hub felts. L.H

Original grease retaining felts

Horn buttons, modern

Horn buttons, modern

These work ok, need painting as shiny

BSA complete clutch

BSA complete clutch

Good working clutch

Smiths military speedometer, pin drive, pre 1940

Smiths military speedometer, pin drive, pre 1940

Suitable for K.M series and de-lux WM20, fully reconditioned by Phil Woods

N.O.S gearbox oil filler plug

N.O.S gearbox oil filler plug

Replace the chewed head!

Lucas magneto suitable for BSA .To restore

Lucas magneto suitable for BSA. To restore

Turns but will need rebuild

Lucas D U 42 headlight unit

Lucas D U 42 headlight unit WITH WW2 CZ27AMP AND T SWITCH.

Refurbished ready to paint. Fits all W.D WW2 Lucas equipped motorcycles

NOS cush drive bearing

NOS cush drive bearing

Part of engine shock absorber

Toolbox with knob

Toolbox with knob

Good condition

8" Lucas blackout

8″ Lucas blackout

Often seen in Malta

Pre-war KM smiths pin drive speedometer with correct cable

Pre-war KM smiths pin drive speedometer with correct cable

Prof: service, keeping original appearance

7/8″ Canvas Throttle & Left Side Covers

7/8″ Canvas Throttle & Left Side Covers

Best new product on market. UK made

Late war engine, running

Late war engine, running

+20 very good condition

M42 Post War Lucas

M42 Post War Lucas

Fitted after WW2 good shell, clip & chrome rim

Pre war gearbox

Pre war gearbox

35-37 era heavyweight BSA

Rear wheel, complete

Rear wheel, complete

Good used condition

N.O.S engine/crank case bolts

N.O.S engine/crank case bolts

Holds primary case on and wired

Primary case set

Primary case set

Good, brass plug

Kick Starter Quadrant

Kick Starter Quadrant

Good condition

K.M style front number plate

W.M style front number plate

With new guard clamps

N.O.S. Fuel Cap

N.O.S. Fuel Cap

As new, chromed

Timing Chest Cover

Timing Chest Cover

N.O.S. Plain type. 1941 onwards

Lucas panels with push changer switch

Lucas panels with push changer switch

Used with test switch in housing. Will make nice set

Lucas DU42 headlamp shell

Lucas DU42 headlamp shell

Bare, original anti-gas paint. Rare

Drivers footrest set

Drivers footrest set

Really nice condition set

Clutch Pressure Plate

Clutch Pressure Plate

With complete nuts & ballbearing

Reproduction Front Tank Mounting Sets

Reproduction Front Tank Mounting Sets

Used to protect tanks from vibration damage. Sold as pair. Few only

Top Chain Guard

Top Chain Guard

Small hole on side hence the price

NOS Engine Bolts

NOS Engine Bolts

x 5 in pack

WM20 55481 Complete Engine

WM20 55481 Complete Engine

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WM20 Cases

WM20 Cases

Good cases. Some wear on Mag platform. Unstamped

Lucas Dynamo Bands

Lucas Dynamo Bands

40w and 60w

Crank Cases

Crank Cases

Good condition. Well marked

Front Wheel

Front Wheel

No speedo drive

Toolbox, Good Condition

Toolbox, Good Condition

Had repair but good condition

BSA WM20 Good Running Engine

BSA WM20 Good Running Engine

On good +30 bore. Pulls & runs well