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

Click on an image to view in more detail.

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

well used bsa m20 oil cap

OIL TANK CAP- WORKING -RUSTY

will clean up or good for as found bike

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.

TOOLBOX P CLIP- FRAME/TOP TOOLBOX .

HOLDS TOOLBOX TIGHT TO FRAME .

bsa timing cover WW2

WW2 TIMING COVER .

good condition we have replaced quill with NOS part

ww2 bsa wm20 engine

COMPLETE BOTTOM END – WW2 ENGINE.

this engine ran very well. its had little use since reme rebuild in 1954

CYLINDER HEAD -CAST IRON ,GOOD CONDITION

USUAL FIN DAMAGE AROUND PLUG BUT THICK FINS .USEABLE PART

BARREL- +20 EXCELLENT CONDITION

SUPER FINS ,NO DAMAGE AND STILL THICK ,GOOD BORE

BSA M20 FOOTREST SET

FOOTREST SET -STRAIGHT AND COMPLETE

COMES WITH PRIMARY CASE SPACERS

LUCAS PANEL WITH CZ27 AMP AND WW2 SWITCH

LUCAS SWITCH PANEL WITH CORRECT CZ 27 AMP AND T 4 POSITION SWITCH .

TESTED AND WORKING WELL . NICE FACE TO CZ27 AND GOOD PANEL

BRASS CONVOY LIGHT CONNECTOR ASSEMBLY -NEW

NEW – REAR TAIL LIGHT WIE CONNECTOR ASSEMBLY 3 PARTS AS ORIGINAL

THESE ARE VERY ACCURATELY MADE BRASS COINNECTORS .

GENUINE WW2 CONVOY TAIL LIGHT

rare part . restored part with correct lens assembly

MAG/DYNO DRIVE SPROCKET .

GOOD CONDITION MAGNETO SPROCKET FOR M20

GOOD BSA WM20 CLUTCH

CLUTCH , COMPLETE , GOOD CONDITION .

THIS WAS A USED WORKING WELL CLUTCH ,BIKE RIDDEN BY US

oil pipe set – used

genuine ,used set but rubber been replaced on one .

bsa wm20 original handelbars

handelbars -genuine set wm20 .

used and useable ,pretty straight

LUCAS MAGNETO BSA WM20

LUCAS MAGNETO -WORKING

TAKEN OFF RUNNING BIKE ,WILL CLEAN UP . NOT REBUILT BY USWILL FIT OTHER MACHINES .

bsa piled arms tappet cover

BSA EARLY “PILED” ARMS TAPPET COVER WITH SCREWS.

good condition cover fitted on all early war bikes

cas 40w dynamo . mag/dyn

LUCAS 40W DYNAMO ,E3 HM-LO FULLY SERVICED AND GUARANTEED

1947 suitable most mag Dynamo models ww2 . clockwise and negative earth . if not sure if its for your model just ask .

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 REAR MUDGUARD COMPLETE

REAR MUDGUARD ,COMPLETE , 42 ONWARDS , VGC TAIL PIECE

SOID GUARD WITH KNOCKS AND DENTS TO MAIN BODY .TAIL PART ISD REALLY GOOD CONDITION .

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

post war levers

post war levers clutch and brake

as used w.d bikes post war .

front engine plates bsa

front engine plates

pair good condition some bolts

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 .

blackout mask ww2

BLACKOUT MASK WW2 EARLY TYPE

seen in use in malta and by many home units .

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 .

BSA WM20 BATTERY CARRIER

BATTERY CARRIER ,COMPLETE WITH GOOD LUCAS SCRIPT

THIS IS A WW2 BATTERY CARRIER WITH LUCAS SCRIPT TO FRONT PLATE DUMMY BATTERY CASE NOT INCLUDED .

w.d convoy lamps post war

PAIR OF W.D REAR CONVOY LAMPS .

nice pair to light up rear number plates.

FRONT BRAKE PLATE

FRONT BRAKE PLATE ,COMPLETE,A1 CONDITION

LITTLE USED BRAKE PLATE WITH GOOD USEABLE SHOES .

bsa wm20 wd tank

PETROL TANK WITH CAP 1940-42

used throughout war and upgraded to cut off when ordered . 2nd pattern tank

headlight stays set x4

headlight bracket set . 4 stays .

very good used headlight set . getting hard to find genuine sets .

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 wm20 clutch cable

FRONT BRAKE CABLE , USED

good used cable

bsa magneto cable

magneto cable

good , used , magneto cable

sa wm20 spindle set ,front wheel

FRONT WHEEL SPINDLE AND HUB INTERNALS

complete set of adjusters, spacers ,spindle ,dust shields etc

WAR COMPLETE LEVER SET

COMPLETE HANDLE BAR LEVER SET ,POST WAR

TAKEN OFF BSA WM20, WILL FIT ALL 7/8" BARS

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 .

ARY COVER MATCHED SET

PRIMARY CHAIN SET VGC WITH PLUG

A MATCHED SET ,COMPLETE WITH SLIDING PLATE .

WM20 LOWER CHAIN GUARD

LOWER REAR CHAIN COVER WITH TORQUE ARM .

REALLY GOOD CONDITION PART .

Gearbox connecting bolt, rear 66-4168

Gearbox connecting bolt, rear 66-4168

Specialised adjuster bolt

Girder fork spring with scroll

Girder fork spring with scroll

Good condition, has been powder coated

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

Gear change lever

Gear change lever

Straight with good splines

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

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

Rear lifting handle

Rear lifting handle

If using long field stand, 42-45

Front mudguard

Front mudguard

Great condition

Toolbox with knob

Toolbox with knob

Good condition

1939 BSA KM20 Engine

1939 BSA KM20 Engine

Very early, September, 1939 WD engine from contract C3655

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

Rear stand spring

Rear stand spring

Genuine, used

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

BSA 24½” & 25½” Rubber Covered Speedometer Cables

To fit up to 1942/43. For all WW2 BSA Forks. British made, won't damage speedometers

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

Post ’42 Fuel Tank with cut off

Post ’42 Fuel Tank with cut off

Click on image to view full details

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

Rear Mudguard KM, Early WM and Deluxe

Rear Mudguard KM, Early WM and Deluxe

Repaired holes, sound condition, correct tailpiece original to this guard

Primary outer

Primary outer

With inspection cap

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

Gearbox

Gearbox

All gears located

W.D drivers saddle

W.D drivers saddle- late war pattern.

Complete with springs and BSA hexagonal pillar bolts. Excellent

NOS Engine Bolts

NOS Engine Bolts

x 5 in pack

WM20 55481 Complete Engine

WM20 55481 Complete Engine

Click on image to view full details

WM20 Cases

WM20 Cases

Good cases. Some wear on Mag platform. Unstamped

Lucas Dynamo Bands

Lucas Dynamo Bands

40w and 60w

Timing Cover

Timing Cover

Good condition. Good quill

Crank Cases

Crank Cases

Good condition. Well marked

Front Wheel

Front Wheel

No speedo drive

Gearbox Clutch Arm

Gearbox Clutch Arm

With all fittings

Oil Tank With Lid

Oil Tank With Lid

Good, no dents on front

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