Welcome to Performance Engineering Services

PES. New motorcycle parts manufactured for bikes produced in the past. BSA specialist. Making dreams come true and banishing the nightmares of owning a classic bike.

Performance Engineering Services

From a single washer to a complete bike, PES is your answer. Although we don't claim to always have eveything in stock, you can pre-order from the next batch to be manufactured. Fast moving parts can normally be dispatched next day.

Price List

Check out our price list of over 2,200 products for your classic motorbike. We manufacture and sell parts for BSA, Triumph and Norton.

Postal Rates

We deliver parts worldwide. All packages posted in the UK are sent first class recorded delivery. For overseas customers, please get in touch with regards to airmail.

Spare Parts

Browse by model. Our online catalogues are digital versions of the original spare parts catalogues. Read more...

New and Featured Products

View our showcase of the various parts, kits and conversions we have remanufactured or developed to make your classic motorcycle ownership more rewarding. Read more...

Engineering

Off-road design, manufacture and preparation of competition motorcycles. Read more...
© 2022 Performance Engineering Services, Elim Church, Beever Street, Goldthorpe, South Yorkshire, S63 9HT, United Kingdom
Telephone: 01709 894192. Email: pes.sales@btconnect.com. Facebook: facebook.com/performance-engineering-services.
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Home/New and Featured Products/Engine

Engine

Engine, Carbs, Exhaust, Radiator, Clutch, Gearbox and Differential

180 products

1/4 Solid Dowel Pin 40-0394 40-394 70-8011
3/8 dowel 71-1989 70-8009 5/16 ID PES
65-2316 Mag/Dyno Oil Seal
66-3058 KICKSTART RETURN SPRING
71-2122 GEAR, SCAVENGE,OIL PUMP,DRIVING,T25,B50 11 teeth
71-2124 GEAR, SCAVENGE,OIL PUMP,DRIVEN,T25,B50 11 teeth
71-2229 Oil pump drive spindle T25 B50 11 teeth
71-2230 GEAR, FEED OIL PUMP B25 T25 1971 11 teeth
82mm PES Piston ring set
88mm PES 4valve Piston Kit E79A
B44 L/H crank seal 70-8025 40-0025
BSA 1/4 Ball Bearing non return valve 60-2364 1-4675
BSA A Series Timing Inspection Cover(o ringed) PES 70-9114
BSA A50 A65 B25 C15 B40 B44 B50 Gear Lever 57-1164 40-3073
BSA A50 A65 Gearchange Repair Shaft PES
BSA A7 A10 B31 B33 C10 C11 C15 M20 M21 M33 Crankcase to Oil Pipe Adaptor 65-2252
BSA A7 A10 B31 B33 Engine 18T Sprocket 2-Lobe 67-1132
BSA B M Sump Filter/Gasket Set 65-2623A
BSA B SERIES TIMING INSPECTION COVER(O RINGED) PES 68-0839
BSA B+M Group 1938-62 Rigid + Plunger Gearbox Output Bearing
BSA B25 B40 B44 B50 Driving Gear Oil Pump 41-0603 70-8094
BSA B25 B40 EARLY B44 K/S QUAD 5/8 SHAFT COTTER 41-3059+BEARING
BSA B25 B44 B50 Gearchange Plunger Spring 40-3155 57-2106
BSA B25 B44 B50 TR25 Sump Gauze 70-9979
BSA B25 B44 PES Kickstart Quadrant stop pin 40-3276
BSA B25 B44 Triumph TR25 Alternator/Contact Breaker Leads Grommet 70-8155 41-0715
BSA B25 C25 some B40 most B44 B50 Triumph TR25W T25 TR5MX 13 Tooth Front Sprocket 57-4306-13
BSA B25 T25 Head Gasket 40-0933 70-8081
BSA B31 B32 B33 B34 A7 A10 Engine Sprocket 20T 2-Lobe 65-2538
BSA B31 B32 B33 B34 M20 M21 Timing Cover Oil Seal 66-1923
BSA B31 B33 M20 M21 Breather Disc 15-0082
BSA B31 B33 M20 M21 Gearbox Inspection Cover Gasket
BSA B31 B33 M20 M21 Idler Pinion Spindle 65-2335 NOS
BSA B31 B33 M20 M21 Plunger Gearbox Inner Cover Gasket 66-3069
BSA B31/B32/B33/B34/C10/C11/C12 Billet Sump Plate with magnetic drain plug - finned
BSA B40 WDB40 B44 Pressure Relief Plug 67-1505 40-0201
BSA B40E B44 GP Splined 3/4 shaft Kickstart Quadrant 5/8 spline+bearing PES
BSA B40E B44 GP SPLINED KICKSTART QUADRANT 5/8 SPLINE+BEARING PE
BSA B44 B25 KICKSTART QUADRANT 57-4070 57-4592 57-2643 +BEARING PES
BSA B44 Crank Nut (Bar Turned) Pivot pin/anchor plate nut 37-1798 PES 42-5864
BSA B44 PES 82mm Piston Assembly Forged 100mm Long Stroke E204LS
BSA B44 Std Piston ring set 79mm GPM
BSA B50 1971 B25 PES Kickstart Quadrant stop pin 57-4342
BSA B50 B44 14 TOOTH FRONT SPROCKET
BSA B50 B44 15 TOOTH FRONT SPROCKET
BSA B50 B44 17 TOOTH FRONT SPROCKET
BSA B50 B44 18 TOOTH FRONT SPROCKET
BSA B50 B44 B25 G-box drain plug O-Ring 60-3530 68-3168
BSA B50 B44 B25 Gear Change Repair Shaft 57-2692R PES
BSA B50 Cam Follower 71-2513
BSA B50 CLUTCH COVER BOLT SET 14-6610 21-2153
BSA B50 Heavy Duty Bearing Retaining Plate replaces 71-2649
BSA B50 Kick Start Pinion 57-4336
BSA B50 Kick Start Ratchet 57-4339
BSA B50 Kickstart bush 73 on model 57-4559 PES
BSA B50 Kickstart Ratchet Spring Washer 57-4452
BSA B50 KICKSTART SPRING ANCHOR BOLT 57-3764 PES
BSA B50 LATE B44 B25 GEARBOX DIPSTICK 57-4679 40-1033
BSA B50 Left Hand Main Bearing Distance Piece 71-2650 PES
BSA B50 L-H Main Bearing Distance Piece Inner Races 71-1631
BSA B50 Points Cover 70-8737 40-0684
BSA B50 Return Spring Anchor Bolt 57-4454 Steel PES
BSA B50 Timing Cam Gear PES E64 High Flange
BSA B50, B44, B40 ROCKER BREATHER FLATS
BSA B50, B44, B40 ROCKER BREATHER ROUND
BSA C series. Oil pump driving spindle retaining pin 65-2603
BSA C10 C10L C11 C11G C12 Oil Pump Driving Spindle 65-2602
BSA C10, C11, B31, B32, B33, B34, M20 & M21 Cush Drive Bearing Nut Lockwasher
BSA C15 B25 B40 B44 B50 Triumph Spring Backing Plate 40-3043 57-1249
BSA C15 B25 B40 B44 B50 Triumph TR25W TR25SS T models Camplate Locating Spring 40-3042 57-2691
BSA C15 B40 B25 C25 B44 Kickstart Ratchet 57-2681 40-3279
BSA C15 B40 B25 C25 B44 Triumph TR25 Kickstart Pinion 40-3271 57-2683 PES
BSA C15 B40 B44 Rocker Oil Feed Pipe 40-0183
BSA C15 B40 C25 B25 B25 B44 B50 Crankshaft Oil Seal 70-8154 40-0977
BSA C15 B40 Inner cam bush 40-0030 dizzy models
BSA C15 B40 sump plate gasket 40-0111
BSA C15 C25 B25 B40 B44 B50 TRIUMPH TR25W Kickstart Ratchet Spring 57-2684 40-3273
BSA C15 C25 B25 B40 B44 BSF Thread Engine Case Screw Set Stainless Steel
BSA C15 Tiger Cub Gear change repair shaft 40-3055R PES
BSA C15-B50 gearbox Mainshaft/clutch backplate seal 40-0243
BSA C15G B25 B40G Early B44 Inner Cam Bush 40-0676 70-3175 9/16" bore
BSA C25, B25, B40, B44, BSF PES High Tensile Kickstart Spring Anchor Bolt 40-3278
BSA Camplate spindle 57-4048 40-3291
BSA Camplate Spring Bolt 2BA x 3/8" Hex 40-3044, 29-3242, 57-1076
BSA Camplate Spring Lock Washer 40-3045 57-1180
BSA Chaincase Cap with o ring 70-8231 57-2166 40-0715 PES
BSA Clutch Release Rack 57-2699 40-3282
BSA Cush Drive Sleeve B C M Series M20 M21 1937-1954 15-1555
BSA Goldstar Crankshaft Oil seal 65-2505
BSA INNER CAM BUSH 70-8315 PES
BSA Inner cover O-ring 3/16 x 5/16 68-0289
BSA Kick Start Oil Seal 57-2641
BSA Kickstart Bush up to 73 57-2642 PES
BSA KICKSTART RETURN SPRING 40-3275 57-2687 57-4338 PES UPRATED
BSA M20 Drive Side Engine Rivet
BSA M20 Engine Yoke Plate Bolt Valve Lifter 66-4098
BSA M20 etc. Oil pump driving spindle retaining pin 65-2579
BSA M20 etc. Oil pump driving spindle retaining pin-long 65-2580
BSA M20 etc. Oil pump fixing bolt spring washer 24-978
BSA M20 Gearbox Inspection Cover Bolt
BSA M20 Gearbox Oil Retaining Washer 24-4225
BSA M20 Inlet Cam Pinion Spindle 65-2425 NOS
BSA M20 M21 B31 B32 B33 B34 Drive Side Oil Flinger 24-2113
BSA M20 M21 B31 B32 B33 Magdyno Drive Idler Pinion with Bush
BSA M20 M21 Cam Pinion Bolt 66-2007
BSA M20 M21 Gasket Set 1939-49
BSA M20 M21 Gearbox Outer Cover Gasket Rigid 66-3068
BSA M20 M21 M33 B31 B33 B34 Inlet/Exhaust Camshaft c/w Bushes 65-2420
BSA M20 M21 M33 C10 C11 B31 1937on Cork Primary Chaincase Gasket 66-7514
BSA M20 M21 Oil Retaining Washer Small 24-4236 PES
BSA M20 M21 Timing Side Outer Main Bearing 27-0261
BSA M20 Magneto Strap Eye Bolt 27-5156
BSA M20 Magneto Strap Eye Plug Threaded 65-2353
BSA M20 Magneto Strap Long 66-2320
BSA M20 Magneto Strap Short 66-2321
BSA M20 WD 18 Tooth Gearbox Sprocket
BSA M20 WD Gearbox Adjuster Eye Bolt 27-5710
BSA OIL RELEASE VALVE SPRING 40-0387
BSA OUTER CAM BUSH 70-8150 40-222 PES
BSA ROCKET 3 FOOTCHANGE SHAFT 57-3758
BSA Sump Gasket 67-1288 71-1424 70-8070
BSA Triumph C15 C25 B25 B40 B44 B50 TR25W Camshaft Oil Seal 70-8153 40-0679
BSA Triumph Pressure Release Valve Copper Washer 70-9737 70-1670
C15 KICKSTART STOP PIN 40-3276
DellOrto Pilot Jet 1486
Engine Case Bolt Set B25 B44 UNC thread
Hepolite Oil Pump BSA Pre Unit B31 B32 B33 B34 M20 M21 C10L C11G C12 65-2589 65-2619
Honda CRF250R CRF 250X Conrod Kit MX-09010
Kickstart Bush 20mm Shaft E117 PES
KICKSTART LEVER 79 ON 20MM SPLINED E107 MOTO VILLA BETA 81-82 PE
KICKSTART QUADRANT B50 70-71 57-4341 INC. BEARING (PES)
Oil seal kit BSA B25/C25/B44/B50 A12 40-0025 41-3054 40-0977 40-0679 57-2641 40-0243 40-3281
OUTRIGGER PLATE SCREW
PES 1972 B50 Double Dish L/H outer engine cover E44
PES 1975 B50 Single Dish L/H outer engine cover (fluted) E44D
PES 1975 BSA B50 R/H outer engine cover (fluted)
PES 1976 BSA L/H OUTER ENGINE COVER E52A
PES 4V Exhaust valve 6mm E118
PES 4V heavy duty pushrod
PES 4V Inlet valve 6mm
PES 72 B50 R/H outer engine cover
PES AMAL MK I CARB SPACER 1 11/64″TUFNOL 8.3MM THICK 70-7821
PES B25 B50 Oil Pump Fixing Stud 1/4 UNF/UNC 14-1606
PES B44 heavy duty pushrod 41-0790
PES B50 B44 B40 B25 SUMP PLATE WITH MAGNET KIT (FINNED)
PES B50 B44 Oil pump locating dowel 41-0706 70-8022
PES B50 heavy duty pushrod 71-3657
PES Back Plate Bearing
PES Bar Turned Mainshaft Half Nut 76-0271 57-2686
PES BSA B + M Group Kickstart Bush with o ring 24-4258
PES BSA B C M Group Oil Pump Circlip 65-2622
PES BSA B25 B50 B44 TRIUMPH Scavenge Valve 71-2771 41-0624
PES BSA B31 B33 M20 M21 M33 Gearbox Drain Plug
PES BSA B50 B25 B44 TR25W Vernier Timing Pinion Gear 41-0569 70-8040
PES BSA B50 B44 B40 B25 Alloy Sump Plate (shallow) E67P 67-1286
PES BSA B50 Kickstart Quadrant 73 onwards with bearing 57-4639
PES BSA C15 B25 B40 B44 B50 TRIUMPH TR25 POINTS COVER 70-8737A (O-RINGED) 40-0684
PES BSA C15 B40 Crankshaft timing side bush 40-0389 40-0391
PES BSA HIGH TENSILE KICKSTART COTTER PIN 57-4357
PES BSA M20 Gearbox Oil Filler Plug with integrated o ring M196 Aluminium
PES BSA M20 Gearbox Oil Filler Plug with integrated o ring M196B Brass
PES BSA M20 M21 Kickstart Ratchet Pinion Sleeve Oilite 66-3081
PES BSA M20 M21 Kickstart Ratchet Pinion Sleeve PB1 66-3081
PES BSA M20 M21 Layshaft Bush Long 24-4241
PES BSA M20 M21 Layshaft Bush Short 24-4223
PES BSA M20 M21 M33 B31 B32 B33 B34 C10 Chain case Inspection Cap 27-0209B with o ring 27-209
PES BSA M20 M21 M33 B31 B32 B33 B34 C10 Timing Cover Inspection Cap 27-0209 with o ring 27-209
PES BSA M20 M21 Magneto Timing Puller 61-1903
PES BSA Oil Non Return Valve Spring & Ball 40-0385 60-2364 70-8124
PES BSA Oil Non Return Valve Spring 70-8124 40-0385
PES BSA Tappet Adjuster Locknut 24-0563 70-0470
PES K/S QUADRANT 20MM SPLINE 4 VALVE E114W 79 WORKS+BEARING
PES KICKSTART QUADRANT 20MM SPLINE E114 INC. BEARING
PES Magnetic Sump Plate drain plug 8mm x 1.25mm
PES R/H Timing Cover Bolt Set 70-8169 14-6612 14-6614 14-6610 14-6606
Replacement gasket/washer set for pre-monobloc 76/276 carburettor
Tab washer set engine & gearbox BSA C15-B50 A11 40-0455 40-3121 57-4343 40-3221 40-3257
Triumph primary chaincase backplate oil seal 70-3833
Triumph T140 Sump Gauze (without hole) 83-4783
Universal Air Filter sheet

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