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.

BSA PRE-WAR BRAKE LEVER WITH RARE HORN BUTTON .

COMBINED FRONT BRAKE LEVER ,AIR LEVER AND HORN BUTTON.

PRE-WAR AND 1939 KM OR DELUX . PARKING BRAKE WORKS AND HAS CABLE CLAMP.

POST WAR BRAKE ROD

USEABL , WILL GET YOU GOING IF YOU CANT FIND CORRECT PART.

BSA WM20 TOP GIRDER FORK YOKE

TOP GIRDER FORK YOKE .

WITH ORIGINAL HANDLEBAR CLAMPS , NEEDS A GOOD CLEAN

STEERING DAMPER SET , COMPLETE.

READY TO FIT WITH ALL PARTS AND UNDAMAGED KNOB

W D M20 PILLION FOOTREST.

PILLION FOOTREST .

NICE CONDITION . HARD TO FIND .

COMPLETE GEARBOX PLATE SET WITH ALL LOWER FRAME PARTS .

AS YOU CAN SEE TAKEN FROM SAME BIKE AND ALL BSA

HINGED TOOLBOX -PREWAR BSA AND ARIEL.RARE PART.

I ELIEVE THIS WAS A BSA FITTMENT AS THE MOUNTING LUGS HAVE BEEN REMOVED BUT LOOK THE SAME AS IN 1939 PARTS BOOK .

LUCAS 8″ HEADLIGHT SHELL-WITH CORRECT RIM.-FITS MANY EARLY WD BIKES .

some rust on bottom see pictures buts hold a rim well .

BSA WM20 RIGID REAR WHEEL COMPLETE READY TO FIT .

REAR WHEEL COMPLETE WITH SPINDLE .

GOOD CONDITION , ORIGINAL RIM AND BUTTED SPOKES BRAKE ARM ETC .

BSA WM20 COMPLETE ,RUNNING ENGINE .

COMPLETE RUNNING ENGINE 1940.

WE HAVE RUN THIS ENGINE . +20 WITH GENUINE BSA PISTON.

LOWER FRAME/GEARBOX PLATE BOLT WITH SPACERS .

CORRECT 3 SPACERS IN GOOD CONDITION .

REAR BRAKE PEDAL FRAME BOLT WITH NUT .

WAS A VERY GOOD FIT ON PART 7219

REAR BRAKE PEDAL.

GOOD CONDITION .

GIRDER FORK SIDE DAMPER KNOB.

GOOD CONDITION ,NOT SEEN MUCH USE .

N.O.S BRAKE SHOES 35-9235- FIT ALL WW2 BSA M20.FRONT & REAR .

FANTASTIC CONDITION . THESE FIT ALL PRE WAR M SERIES BIKES ALSO POST WAR M20.SOLD IN PAIRS ONLY.

N.O.S LICENSE PLATE HOLDER-CLIP FITTING

MANAGED TO GET 1 MORE .IN R.A.F BLUE.

N.O.S VINTAGE ,BOXED REAR TAIL LIGHT .

FANTASTIC CONDITION PART . 1 ONLY .

N.O.S LICENSE DISC HOLDERS .

JUST PICKED UP A FEW MORE

SMITHS MILITARY WW2 SPEEDOMETER.-MOST WW2 BIKES.

THIS SPEEDO JUST OVERHAULED AND SERVICED BY PHIL WOODS SPEEDOS .

SUMP GUARD – WELL USED GENUINE PART-WITH CLAMP.

THIS SUMP OR BASH PLATE HAS MANY DENTS WHICH SHOWS HOW ESSENTIAL THEY ARE .

FRONT MUDGUARD -GOOD CONDITION PART .

THIS IS A REALLY NICE AND READY TO USE MUDGUARD.

CRANK WITH EXCELLENT BIG END AND GOOD TAPERED BEARINGS .

BRITISH MADE BEARINGS WHICH I WOULD USE IN MY OWN MACHINE .

SET OF CRANKCASES .- MID WAR .IN REALLY GOOD CONDITION .

MAG PLATFORM IS LIKE NEW ! COMES WITH MAG/DYNO STRAPS AND OIL SPINDLE

REAR WHEEL -COMPLETE -READY TO FIT .

HAS SPINDLE ,SPACERS AND BRAKE ARM.

COMPLETE FRAME WITH V5C PAPERS -1942

A GOOD MID WAR FRAME THAT HAS BEEN LOOKED AT BY JAKE ROBBINS AND HAD SMALL REPAIRS.

DRIVERS SADDLE -EARLY TYPE .-REPRO COVER .

HAD NOSE ALTERED TO HELP TALLER RIDER AS SPRINGS ETC LONG .GENUINE HEX RISER BOLTS .

CYLINDER HEAD -THICK FINS -WITH HEAD BOLTS AND GASKET .

SMALL AMOUNT OF FIN DAMAGE WITHIN USEABLE LIMITS SET BY MILITARY .

HEADSTEADY.

good condition .

AMAL 276 C/1B CARBURETTOR .

MISSING CHOKE ASSEMBLY . UN-TESTED .

LIFTING HANDLE .66-6947

42 ONWARDS . GOOD CONDITION

REAR MUDGUARD TAIL- N.O.S -42-45 .

FLAT TYPE, AS NEW -1 ONLY .

PRIMARY OUTER – EXCELLENT CONDITION WITH INSPECTION PLUG.

THIS COVER HAS NOT BEEN BASHED ABOUT . VERY PRESENTABLE COVER . CORRECT INSP:CAP 27-209

REAR MUDGUARD .- FLAT TYPE-42-45 .

A VERY SOLID GUARD THATS BEEN WELL COATED . REALLY GOOD TAILPIECE .

BOTTOM FRAME BOLT WITH SPACER.

SPACES OUT FRONT GEARBOX PLATE. NOT ORIGINAL NUTS

REAR FOOTBRAKE SPRING .

GOOD USED PART .

VALVE SET- GOOD CONDITION . VALVES,SPRINGS ,CUPS AND COLLETS

THESE HAVE HAD VERY LITTLE USE . NICE SET .

PETROL TAPS – POST WAR ,WITH CORRECT TANK INSERTS WITH GOOD FILTERS .

INSERTS GOOS AS ARE FILTERS ., 1 TAP HAS LEVER MISSING .

PILED ARMS TAPPET COVER -VGC

GOOD CONDITION -SHARP RIFLES .

REAR ENGINE / GEARBOX PLATES WITH ADJUSTER AND STOP .

ENGINE BOLTS ARE THERE -ALL ORIGINAL

FRONT ENGINE PLATE SET WITH BOLTS

GOOD ,COMPLETE ,READY TO RE FIT PART.

ENGINE PLATE SET -HAS CORRECT NUTS AND BOLTS

ALSO VALVE LIFTER BOLT . GOOD CONDITION .

N.O.S LUCAS MILITARY 4 POSITION T LIGHT SWITCH IN BOX .

they dont come better than this for condition ! as new , 1 only

TIMING COVER -LATE WAR TYPE IN VERY GOOD CONDITION

THIS HAS HAD LITTLE USE , GOOD QUILL AND READY TO FIT .

HEAD STEADY- GOOD CONDITION. 66-421

often missing .they were fitted to help control vibration problems .

LUCAS HF1235 ALTETTE HORN-WORKING . 6V.

THIS IS A GENUINE W.D ISSUE HORN.DATED 1950 BUT SAME AS WW2. STILL SHOWING MILITARY PAINT

DRIVE SPROCKET SET .

GOOD CONDITION 19 TOOTH SPROCKET

K.L.G NOS PLUG IN GENUINE TIN .

great part to complete your toolbox gear. suitable all bikes except large plug Nortons .

FRONT MUDGUARD STAY .

GOOD TO USE .

PANNIER TOP SPACERS SET .

these are used to space of rear rack from lifting handle . often missing .

FOOTBRAKE FRAME BOLT AND BUSH

good used condition .

CANVAS HANDELBAR COVERS – 7/8″ .

THESE ARE BEST REPRODUCTIONS CURRENTLY MADE IN UK.

SPRUNG DRIVER SADDLE PILLAR BOLTS

NICE RE-WORKED CONDITION .- FEW ONLY .

CUT DOWN PILLION FOOTRESTS

SOMEONE HAS CUT SHORT POST WAR !! MAY BE OF SOME USE .

REAR LIFTING HANDLE. KM AND UP TP 42.

HAS BRAZED BOSS FOR EARLY HORIZONTAL STAY .

LUCAS W.D 4 POSITION LIGHT SWITCH.

USED PART. TESTED AND WORKING

AMAL 276 C/1B WITH “LONG NECK” AMAL FLOAT.

THESE WERE OFTEN USED WITH VOKES AIR FILTER SETS AS GAVE MORE ROOM.

PRE WAR OUTER GEARBOX CASING BSA M SERIES .

PRE WAR GEARBOX OUTER .

NO CRACKS BUT CORROSION PITS IN PLACES . FITS WHOLE RANGE OF PRE WAR M SERIES BIKES .

N.O.S SUMP GUARD-2ND PATTERN. GENUINE. RARE.

THESE SUMP GUARDS ARE NOT YET COPIED WELL ,THESE ARE BSA FITTED 42-45 EXCELLENT CONDITION WITH CLAMP AND NUTS .

AMAL N.O.S FLOAT CHAMBER WITH PETROL PIPE FITTING

CORRECT 1M WM20 FLOAT CHAMBER WITH FLOAT , STORAGE WEAR .

W.D BATTERY CARRIER -ALL 4 PARTS -READY TO FIT . VGC

THIS SET FOR WM20 . STRAPS HAVE BEEN WELL REPAIRED AT SOME TIME .NOS TOP FIXING WITH ACORN NUTS .

ALLOY HEAD M20- NOT WM20 – VERY GOOD CONDITION .

1 XSMALL FIN CHIP . PREFERED BY SOME RIDERS .USED POST WAR TO HELP WITH HEAT PROBLEMS.

LUCAS MAGNETO IN GOOD WORKING CONDITION .INCLUDING BSA DRIVE SPROCKET.

CORRECT FOR WM20 AND OTHERS . GOOD SPARK .TAKEN OFF RUNNING BIKE .

FRONT MUDGUARD .IN GREAT CONDITION .

GOOD STRAIGHT GUARD WITH THE ODD DENT AS YOU MIGHT EXPECT .

AMAL 276 C/1B. -COMPLETE CARBURETTOR.

GOOD CLEAN LOOKING CARB WITH SOME NEW PARTS FITTED .

OIL TANK IN BLACK-GOOD CONDITION .

NO DENTS SEEN. -WORKING LID

gearbox mainshaft, sleeved, nut. -holds on clutch

good condition ,nice flats to nut

METAL PETROL PIPE -ORIGINAL FITMENT.

TAKEN FROM RUNNING MACHINE . RARE PART.

CLUTCH ACTUATING CAP WITH ADJUSTER.

ABOVE AVERAGE CONDITION.LITTLE USEAGE.

FRONT MUDGUARD STAY.

GOOD -STRAIGHT

KICKSTARTER PEDAL -M SERIES -CHROMED

BEEN CHROMED SOME YEARS ,STILL GOOD FOR CIVVY BIKE OR BOBBERS

GEARBOX PLATES -PAIR

JUST PLATES-GOOD CONDITION.

BARREL AND PISTON .+40 LITTLE USED . FIN DAMAGE.

AS NEW PISTON . BARREL HAS SEVERAL FINS DAMAGED ON TAPPET/VALVE CHEST SIDE .GOOD FOR RIDER WHO WANTS CHEAPER OPTION .

MODERN REPRO 6 1/2″ DU42 COPY .

COMPLETE .GOOD REFLECTORAND BULB HOLDER .

CUT OFF PETROL TANK-1942 ONWARDS .

VERY GOOD CONDITION ,GENUINE. GOOD CAP .LOOKS GOOD INSIDE

bottom end -complete- very good runner – 1943

serviced in 1955 and little used . good engine to use .

BSA 1941-1945 PVC COVERED SPEEDO CABLES .

THESE FIT ALL BSA WM20,S . UK MADE . USED LATER WAR 42-45

RUBBER COVERED SPEEDO CABLES FOR BSA 1939-1941

JUST IN SMALL BATCH ,MADE TO MY SPEC.

FRONT WHEEL-COMPLETE WITH SPEEDO DRIVE .

GOOD RIM, RE SPOKED, GOOD HUB . BRAKE PLATE SHOES AND DRUM GOOD .

SMITHS PRE WAR SPEEDOMETER

SMITHS SPEEDOMETER.- PIN DRIVE PRE WAR . FITTED TO BSA AND NORTON .

THIS IS A FULLY RECONDITIONED AND GUARANTEED UNIT BY PHIL WOODS . INCLUDES GENUINE CABLE

TOOLBOX – PRE AND POST WAR M20 RANGE .

GOOD CONDITION -READY TO FIT . HAS HAD EXTRA BRACKET PUT ON .

OIL TANK , WITH GOOD LID .

GOOD USEABLE CONDITION .

FRONT ENGINE PLATE COVER . FITTED TO SOME DELUX 1940 MODELS

RARE PART . BELIEVED FITTED TO LATE 39/EARLY 40 W M 20S .

BSA REAR MUDGUARD TAIL PART.

REAR MUDGUARD TAIL -66-6941

EXCELLENT ORIGINAL CONDITION .NO REPAIRS .LITTLE USED.

REAR STAND SPRING -GENUINE

USED ORIGINAL PART

KICKSTART LEVER

SOME PITTING WITH PIN

FRONT ENGINE PLATE SET WITH GENUINE BOLTS

NICE SET INCLUDES VALVE CABLE SPECIAL BOLT

BSA WM20 LIFTING HANDLE

LIFTING HANDLE . 1942 ONWARDS

GOOD CONDITION -READY TO FIT . FITS ANY MODEL.

BSA WM20 FRONT STAY

FRONT MUDGUARD STAY

GOOD CONDITION .

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

BSA M20 ENGINE PLATE SET

FRONT ENGINE PLATE WITH CORRECT BOLTS

NICE TO SEE SOME GENUINE BOLTS

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 .

REAR BRAKE PEDAL SHAFT 66-7029

GOOD WITH CORRECT NUT

REAR BRAKE PEDAL WITH BUSH

STRAIGHT ,GOOD CONDITION PEDAL

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 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 .

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.

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 350cc HUB WITH SPINDLE AND INTERNALS

TURNS ,HAS NO PROVISION FOR LEFT SIDE SPEEDO BOX. CORRECT FOR ROD TYPE BREAKS , thinner shoes and drum than heavyweights .

BSA SPEEDOMETER BRACKET

SPEEDOMETER BRACKET

GOOD CONDITION -READY TO FIT

ww2 Lucas du42 headlight shell

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

good condition du42 ready to fit

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 , THESE ARE NOT JUST TUBES ! I get lots of bikes with wrong head steady!

REAR BRAKE STOP PLATE BSA WM20

REAR BRAKE PEDAL STOP PLATE 66-7033

WITH SPRING . GOOD CONDITION

bsa m20 gearchange lever

GEAR CHANGE FOOT LEVER

in desert colour-good splines

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

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

m20 rear brake arm

REAR BRAKE ARM

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

genuine ,used ,clutch plates .

some of these are quite useable .

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 .

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 .

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

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

Original grease retaining felts

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 1941 DATED CZ27AMP AND T SWITCH.

Refurbished ready to paint. Fits all W.D WW2 Lucas equipped motorcycles . THEY DONT COME BETTER THAN THIS .

Toolbox with knob

Toolbox with knob

Good condition

8" Lucas blackout

8″ Lucas blackout

Often seen in Malta

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

N.O.S engine/crank case bolts

N.O.S engine/crank case bolts

Holds primary case on and wired

Kick Starter Quadrant

Kick Starter Quadrant

Good condition

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

Reproduction Front Tank Mounting Sets

Reproduction Front Tank Mounting Sets

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

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

Crank Cases

Crank Cases

Good condition. Well marked

BSA WM20 Good Running Engine

BSA WM20 Good Running Engine

On good +30 bore. Pulls & runs well