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singles - engine parts
AJS-Matchless / BSA Kickstart rubber (set of 3)Condition: N.O.S.
Fits: Burman gearboxes -1958Made in England
(Sticker not included)€ 15,00
Alpha Bearings BSA C15 Big end bearing assy (B21 / 40-0720)Condition: N.O.S.
Fits: 250 OHV unit singles 1958-1961 C15-C15S-C15T-SS80 until engine no. C15S2002
Made in England by Alpha Bearings€ 139,00
Alpha Bearings BSA C15T Big end bearing assy (B23)Condition: N.O.S.
Fits: C15S + C15T 1961-1963 only to Engine No. C15S3001
Made in England€ 139,00
Amal Concentric 1000 series (1034RH)Condition: N.O.S.
Fits: Gold Star - CCM 1973-'74, Weslake 8-V Velocette Thruxton
Made in Spain for Amal UK€ 272,00
BSA + Triumph C15-DBD34GS Valve spring set, Partno. 40-1068, 40-0169Condition: N.O.S.
Fits: C15-SS80-B40-B44-B50-DBD34GS 1956-1972Made in England by Terry's
(Sticker not included)€ 33,00
BSA 250 C25 B25 crankshaft OPN 40-1024Condition: used
Journal size 36.3 mm = 0.10 inch U.S.
Bearings available
Will fit unit 250 motors 1967-
OPN 40-1024€ 246,00
BSA 250 singles B25 & C25 Cylinder head c/w new Alpha valves & guides (40-929)Condition: Used
1968 -
Casting no: PBM40930
Made in England€ 268,00
BSA A65 1971 Connecting rod (71-1105)Condition: N.O.S., dismantled from new crankshaft
Fits: BSA A65 -T-L-FS OIF types 1971-1973€ 118,00
BSA B+M types Gearbox sprocket 18-19T (60-3506)Condition: N.O.S.
Fits: B31-B32-M20-M21 Plunger types only
5/8" x 1/4" (520) chain only
Made in England€ 44,00
BSA B25 / Triumph TR25W Clutch repair kit, Partno. 57-2726, 57-2725, 57-2727, 57-7856Condition: N.O.S.
Consists of: 4 driving plates + 5 driven plates + 4 springs + 1 cover gasket
Fits: Unit singles 1971-Made in England€ 98,00
BSA B25 Barracuda & Starfire 250 single Piston complete by G.P.M. (40-970)Condition: NOS
1967 - 1972
oversize 68.6 m
Made in Italy€ 138,00
BSA B25 Cylinder liner fits 250 singles (70-9265)Condition: New stock
1967 -
Made in England€ 82,00
BSA B25 Starfire & C25 Barracuda Cylinder barrel c/w o.s. piston cmplt (40-949 + 40-970) (Alt 70-9263)Condition: NOS
1967-
69 mm dia, bored & honed to correct clearancePriced and sold per complete set€ 298,00
BSA B25-B44 Kickstart Quadrant 57-4070Condition: N.O.S.
Fits: BSA Unit singles with 3/4" shaft
Made in England€ 82,00
BSA B25-B50 Clutch repair kit, Partno. 57-2726, 57-2725, 71-1418, 40-3231Condition: N.O.S.
Consists of: 5 driving plates + 5 driven plates + 4 springs + 1 cover gasket
Fits: Unit singles 1971-Made in England
(Sticker not included)€ 106,00
BSA B25-B50, Triumph TR25W Gear change quadrant cplt 57-2692 (40-3321)Condition: N.O.S.
Fits: All unit motors 1970-
Made in England€ 138,00
BSA B25-C25 / Triumph TR25W-T25SS Piston cplt std (Triumph no. 70-7998+71-1801 / BSA no. 40-970)Condition: N.O.S.
GPM Piston cplt
Fits all: Triumph unit singles 1967-1972 & 250 BSA unit singles 1967-1972
Compr. Ratio: 9.5:1
Made in Italy€ 138,00
BSA B25SS / Triumph TR25W crankcase complete (70-8000)Condition: Used but very good
Bearings still fitted
1968-1972€ 245,00
BSA B25SS-B25T Crankcase DS (71-1869)Condition: Used
Fits: B25 Unit singles 1971-
Also fits: Triumph T25SS, T25T 1971- (castingnr: 71-1825)€ 138,00
BSA B31 - B33 Pushrod cover tube (65-1080)Condition: Used
M33 pre-unit singles
1949-1960
Lenght 238 mm€ 59,00
BSA B31 Oversize pistonCondition: N.O.S.
Fits: 350cc OHV single B31 B32 1946-1959
Dia: 71mm + 0.020" o.s.€ 128,00
BSA B31-B32 Piston ring set (3660 Hepolite)Condition: N.O.S.
Fits: 348cc OHV Gold Star 1946-1957
Std dia: 71mm
Oversizes dia: 71.5mm and 72mm€ 37,00
BSA B31-B32 Piston Std (15504 Hepolite)Condition: N.O.S.
Fits: 350 OHV Singles 1935-
R35/4, R36-17, B23, C23, B26, B30WD + C12
C.R. 6.5 to 1
Dia: 71mm€ 144,00
BSA B31-B32 Set of 2 valves + guides (65-1111 / 65-1110)Condition: N.O.S.
Fits: 350 OHV pre-unit singles 1950-1960
Made in England€ 84,00 € 72,00
BSA B31-B33 A7-A10 Kickstart quadrant, Partno. 42-3160Condition: N.O.S.
Fits: Pre-unit gearboxes 1954-1963
Made in England€ 126,00
BSA B33 M33 Set of 2 valves + guides (65-1239 / 65-1240)Condition: N.O.S.
Fits: 500 OHV Pre-unit singles 1946-1960
Made in England€ 84,00 € 72,00
BSA B33-B34 Piston ring setCondition: N.O.S.
Oversize piston ring set 85mm + 1mm
Fits: 1952-1957 Gold StarMade in England
(Sticker not included)€ 39,00
BSA B33-M33-B34 Piston oversizeCondition: N.O.S.
Fits: 500 OHV single 1952-
Dia: 86.5mm (.060" oversize)
Made in Italy by GPM€ 138,00
BSA B33-M33-B34 Piston oversizeCondition: N.O.S.
Fits: 500 OHV single 1952-
Dia: 86.5mm (.060" oversize)
Made in Italy by GPM€ 138,00
BSA B40 / B44 rockerbox complete with rockers, valve lifter etc. (40-0415)Condition: Used
1960 - 1970€ 164,00
BSA B40 conrod assy complete (41-234)Condition: NOS
B40 - 350 Star - SS90
with needle bearing
1960 - 1964€ 98,00
BSA B40 Conrod c/w Bushes (41-233)Condition: N.O.S.
Conrod c/w bushes
Fits: 350 unit singles 1964-1967
Casting nr: 41-234€ 138,00
BSA B40 Crankshaft Assy, Partno. 41-0233 (41-0288, 41-0292, etc.)Condition: Used, good condition (no play on conrod)
Fits: 350 Unit singles 1962-€ 298,00
BSA B40 Cylinder barrel + std piston (41-0065 + 41-0242)Condition barrel: Used, slightly honed
Fits: B40, 350CC unit singles 1960-€ 345,00
BSA B40 Piston Std/Oversize .020"/.040"/.060" (41-0250/41-0252/41-0254/41-0254-1)Condition: New stock
Piston cplt for 350 unit singles 1960-1968
C.R. 8:1
Std size: 79mm (41-0250)
Oversize .020": 79.5mm (41-0252)
Oversize .040": 80mm (41-0254)
Oversize .060": 80.5mm (41-0254-1)€ 136,00
BSA B40-B25-B44 / Triumph TR25W Clutch centre & sundries, Partno. 41-3210 / 57-2724Condition: N.O.S.
Fits: All unit singles with 4 driving plates
Includes 4 rivets + 8 rubbersMade in England€ 72,00
BSA B40-B44 Clutch repair kit, Partno. 40-3233, 40-3220, 41-3091, 70-7856Condition: N.O.S.
Consists of: 4 driving plates + 5 driven plates + 4 heavy duty springs + 1 cover gasket
Fits: unit singles -1971Made in England
(Sticker not included)€ 98,00
BSA B44 Piston oversize (41-0570)Condition: N.O.S.
Large oversize piston 82mm (3mm O.S.) or 82.5mm (3.5mm O.S)
Fits: 441CC Victor GP MX + Enduro 1965-
Alloy barrel only
Made in Italy by GPM€ 148,00
BSA B44 Victor - Enduro + MX 1965-1968 - Conrod Assy (41-0548)Condition: Used
Conrod & Crankpin assy. In good condition.
Casting NR: 41-0550
Fits: B44 Victor Enduro + MX 1965-1968€ 168,00
BSA B44 Victor Special cylinder barrel 79mm, Casting nr: 41-787Condition: N.O.S.
Fits: Later type B44 with square barrel & headMade in England by BSA
(Sticker not included)€ 460,00
BSA B44-B50 Camshaft cplt (71-1680)Condition: Used
Fits: B44 Victor with 3/4" inner dia camshaft bushes B25-B50 models 1971-€ 127,00
BSA B50 / Triumph TR50MX / CCM 500MX Clutch centre & sundries, Partno. 57-4511 (57-4186)Condition: N.O.S.
Fits: All unit singles with 5+5 clutch platesMade in England€ 72,00
BSA B50 Hepolite piston (71-2148, hepolite nr 19267)Condition: N.O.S.
Genuine hepolite piston cplt 0.50mm
Oversize 84.5mm
C.R: 10:1
Made in England€ 184,00
BSA B50 Oversize piston cplt (71-2150)Condition: N.O.S.
Fits: Victor 500MX B50T-B50SS + DBD34 Gold Star + CCM 500MX
Large oversize: 85.5mm (+.060")
Made in Italy by GPM€ 158,00
BSA B50-500MX Oil pump cplt (71-2228/71-3001)Condition: N.O.S.
Fits: BSA B25-B50 Victor 1971- and CCM 500-600 1974-
Made in England€ 239,00
BSA B50-B25-TR25W Alloy Clutch chainwheel, 52T (57-4303-A)Condition: New stock
Fits: all BSA/Triumph unit singles 5 plate clutches 1963-
Made in England€ 136,00
BSA B50MX B50T B50SS Kickstart Quadrant + Needle bearing (57-3639)Condition: N.O.S.
Fits: 1972 B50 with stepped shaft
Made in England€ 118,00
BSA Bantam 2-stroke piston std/0.010" o.s. (Hepolite 10399)Condition: N.O.S.
Fits: Type D1 Bantam 123CC 1947-1963
Std size: 52mm diameter
Oversize 0.010": 52.3mm
Made in England€ 68,00
BSA Bantam Piston ring set M83 (R5560HEP)Condition: N.O.S.
2 Std piston rings 57mm x 3/32"
Fits: Bantam Major 150cc 1954-1958
Made in England by WellworthyLetterpost possible€ 19,00
BSA Bantam two stroke, piston ring set (90-1311) Hepolite R23080Condition: N.O.S.
Std rings for: 173cc: D10 - D14-4 - D175, 1967-1970
Dia: 61.529mm x 1/16"
Letterpost possible
Made in England€ 19,00
BSA C10 + C10 L side valve engine inlet + exhaust valves ( silicon chrome)Condition: NOS
1937 - 1957
Made in England by Tranco Valves Priced and sold per pair.€ 58,00
BSA C10-B33-A7 Steel clutch plate (set of 5) (29-2832)Condition: N.O.S.
Set of 5 plates
Fits: BSA singles & twins M20, M21, A7, A10 S.Arm, M33, B33, B34, C10, C11
Made in Italy by Surflex€ 74,00
BSA C10L-C12 Kickstart Level cplt (65-3381)Condition: N.O.S.
Fits: Light 4-speed gearbox of 250 SV + 250 OHV -1957
K.S. Spindle dia 3/4"
Made in England€ 79,00
BSA C15 Piston oversize, Partno. 40-447Condition: N.O.S.
Fits: 250 OHV Singles 1959-1966 C15 C15S SS80
Diameter: 67.5mm
C.R. 10:1Made in England by BSA
(Sticker not included)€ 138,00
BSA C15-B25-B50 / Triumph TR25W Clutch sprocket, Partno. 57-4198 (57-4303, 40-3203)Condition: N.O.S.
Fits all 250-350-440-500 BSA + Triumph singles 1958-1980 (will take 5+5 clutch plates)Made in England€ 132,00
BSA C15-B40 Gearbox sprocket (40-3052/40-3123)Condition: N.O.S.
Fits: 250-350 Unit singles 1958-1967
(For 428 chain)
Made in England€ 33,00
BSA C15SS80 STD Piston, Partno. 70-8767Condition: N.O.S.
Fits: 250 Singles 1958- (67mm)
nr. 17897AMade in England by Hepolite AE
(Sticker not included)€ 98,00- BSA C25-B25 / Triumph TR25W Clutch centre & sundries, Partno. 57-4186 (57-4511)
Condition: N.O.S.
Fits: All unit singles with 5-plate clutch 1971-Made in England€ 72,00 
BSA clutch plate bonded set of 4 OPN 67-3242Condition: NOS
Fit: BSA
C10 - C11 1946 - 1953
B31 - B32 1946 - 1957
M20 - B34 1948 -
M33 - B33 1957 OPN 67-3242
A7 - A10 swing-arm type 1948 - 1957
Made in the USA Priced and sold per set€ 58,00
BSA DBD34 G.S. Kickstart shaft, Partno. 42-4163Condition: N.O.S.
Fits: 350-500 pre-unit Gold Star singles 1956-1960Made in England€ 136,00
BSA DBD34GS Smiths Tachometer Gearbox (BG1508-05)Condition: Used, in good working condition
Fits: BSA Goldstar clubmans (nr. 65-9164)
1:1 ratio€ 164,00
BSA Empire Star Valve spring set (VS38)Condition: N.O.S.
Fits: 500cc OHV single -1945
Made in England by Terry's€ 37,00
BSA Gold Star Set of 2 valves & Ph. bronze guides (65-647/65-2512/65-645/65-646)Condition: N.O.S.
Fits: 500 OHV singles BB34/DBD34, 1951-1963
Made in England€ 98,00
BSA M20 Clutch friction plates (set of 4) (15-2419)Condition: N.O.S.
Fits: M20 + Empire Star singles -1947 with single spring clutch
Set of 4 plates
Made in Italy by Surflex€ 57,00
BSA M20-M21 Gasket cylinder head 66-58 (66-0056 / 66-0090)Condition: N.O.S.
Fits: 500-600 side valve engines 1949-1961
Made in England by Payen Gaskets€ 19,00
BSA M20-M21 Piston oversize (66-1025)Condition: N.O.S.
Fits: 500-600 SV (WD) 1937-1958
Dia: 82mm + 0.5mm o.s.
Casting nr. 66-1024
Made in England by BSA€ 138,00
BSA-CCM B25-B40-B44-B50 Camshaft pinion (70-8060)Condition: Used + lightened
Fits: most 250-350-440-500cc unit motors
Width: 10.3mm
60T, 242 grams€ 68,00
BSA-CCM B50MX Mainshaft + 1st Gear 18T (fixed) (57-4682)Condition: N.O.S.
Fits: 350-440-500 BSA-CCM Unit motors 1970-
Made in England€ 172,00
BSA/Triumph B50-T25 Kickstart shaft (57-4341)Condition: N.O.S.
Fits: 250-500 unit singles 1971-1974
(c/w needle bearing)
Made in England€ 116,00
CCM 500-600 4 speed gear-change Camplate (57-3850)Condition: N.O.S.
Fits: All BSA type gearboxes 1972-
Made in England€ 59,00
CCM Fourstroke 500 2-V Omega pistonCondition: N.O.S.
Omega piston oversize
Diameter: 86mm
Fits: CCM 500 2V + BSA B50-DBD34
Made in England€ 248,0011 Teeth for 520 Chain (5/8 x 1/4)
CCM TR350/BSA/Triumph Gearbox sprocket (57-4306/11)Condition: N.O.S.
Fits: All BSA-CCM-Triumph Unit singles 1958-1980
Made in England€ 39,00
CCM-BSA Big end bearing assy B28S (71-1616)Condition: N.O.S.
Big end bearing c/w needle bearing
Fits: BSA B50 MX -1973 & CCM MX500 1974-1981
Made in England by Alpha Bearings€ 238,00
CCM-BSA-Triumph TR25W Clutch locking tool (61-3774)Condition: N.O.S.
Special tool
Fits: All BSA-Triumph unit singles 1959-1973
Made in England€ 33,00
Wipac ignition coil complete type LV6 MT8Condition: NOS
Complete with HT lead & clamp
6 volt
1958 - 1965€ 58,00
