SRM Special Products 
Available From BCS
Visit SRM in Wales!
Please note, these items
are only part of the full SRM
range, with many more items expected to arrive and be stocked in North America
as new batches are made. An SRM to BCS part number conversion is under
preparation, but enquiries can be made for any items either under BSA or SRM
part numbers, and any out of stock items will be advised on upon delivery.
At present, we have no delivery date on arrival of the SRM big bore kits or
stroker cranks for BSA, nor are we handling any of SRM's machining or mechanical
services, which must be arranged directly with them at this time.
| 423-01/A - SRM Steering Head Taper Bearing Set for BSA A and B Models |
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| 42-0071/A - Nut, Cush Hub, Heavy Duty SRM |
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| 65-1544/A - Oiline, Rockers, Billet, PU 1CYL, SRM |
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| 67-0263/A - Covers, Valve Insp, A7/10, Finned, SRM |
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| 461-07 - SRM 750 Big Bore Kit for BSA A65 |
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SRM's BSA A65 and A10 High Delivery Oil Pumps BILLET DURAL HIGH DELIVERY OIL PUMP FOR BSA TWINS Made to very high tolerances, these high delivery oilpumps are suitable as a direct replacement for the original pump. The pumps are a replacement for BSA A7, A10, A50 and A65, and come complete with rev drive as standard. CNC machined from Dural alloy, these pumps will help eliminate wet sumping and any need to fit after market inline non return valves. Complete with hardware, gasket and instructions. A50/A65 Oil Pump - Use BCS Part #71-2413/B A7/A10 Oil Pump - Use BCS Part #42-0155/A Click here for more information
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67-0642 BSA SRM A7/A10 Crankshaft Worm Drive Gear Whenever your main bush wears or you have it replaced, the chances are that the worm gear pinion has worn too. This pinion will also wear the worm drive on the oil pump. So when changing your old pump for one of our new items, be sure to renew the crank pinion at the same time – ensuring a matched pair of gears. You know it makes sense!!
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68-0050 BSA SRM A50/A65 Crankshaft Worm Drive Gear
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BCS Part #331-30 Boyer Micropower K2F Magneto Conversion Kit SRM_MAGKIT-1 Click here for instructions (pdf)
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BCS Part #331-35 Boyer Micropower Magdyno Conversion Kit SRM_MAGKIT-2 Click here for instructions (pdf)
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Stainless Steel Cycle Thread Nuts made in high quality 303 stainless steel, full depth hex - 1/4, 5/16, 3/8" Use BCS Part #415-1426/SS - 1/4" x 26 tpi CEI Stainless Use BCS Part #415-51626/SS - 5/16" x 26 tpi CEI Stainless Use BCS Part #415-3826/SS - 3/8" x 26 tpi CEI Stainless
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21-0692/SS Stainless Steel 3/8" UNF 12 Point Cylinder Base Nuts: 10 for Triples, 8 for 650 Triumph Twins, 4 for Triumph 750 Twins Used after engine # DU75452 (mid 1968) for Triumph 650, and mid 68 Triumph 500, 1970 on BSA A50/65
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Use BCS Part # 65-2611/A (SRMSF2) - Sump Filter Kit for BSA Pre-Unit Singles: CNC machined billet with stainless steel drain plug with integral magnet, gauze plate, gaskets and stainless steel fixing bolts. The drain bolt makes oil changes easier and quicker,the magnet collects cast iron and steel deposits making the oil cleaner and helps prolong engine life. Click here for sump plate installation instructions. (pdf)
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Use BCS Part #70-8064/B (SRMSF1) - Sump Filter Kit for BSA A10, A7, A50 & A65: CNC machined billet with stainless steel drain plug with integral magnet, gauze plate, gaskets and stainless steel fixing bolts. The drain bolt makes oil changes easier and quicker,the magnet collects cast iron and steel deposits making the oil cleaner and helps prolong engine life. Click here for sump plate installation instructions. (pdf)
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BCS Part #70-8064/C (SRMSF3) - Sump Filter Kit for BSA Unit Singles: CNC machined billet with stainless steel drain plug with integral magnet, gauze plate, gaskets and stainless steel fixing bolts. The drain bolt makes oil changes easier and quicker, the magnet collects cast iron and steel deposits making the oil cleaner and helps prolong engine life. Click here for sump plate installation instructions. (pdf)
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BCS Part #65-2623 - Stainless Steel Sump Filter Gauze for BSA Pre-Unit Singles
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BCS Part #70-9979 - Sump Filter Gauze for BSA Unit Singles
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BCS Part #71-1126 - Stainless Steel Sump Filter Gauze for A7, A10, A50 & A65
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SRM's Stainless steel CNC precision engineered pressure release valve, each one hand assembled and checked on a pressure jig to ensure correct seal and blow off pressure; the main problem with old PRV`s is the poor thread diameter, some original BSA and Triumph valve were found to be 0.025" (0.63mm) undersize on the thread diameter, this allowed oil to bypass the valve to the blow off via the threads, this resulted in low oil pressure. Our valve helps eliminate this problem with the high accuracy of manufacture. Use BCS Part #71-3447/SS (SRM-71.2370) - fits BSA B44, B50, A7, A10, A50, A65 and Triumph 3TA, 5TA, T100, 6T, T110, T120, T140. Click here for installation instructions. (html)
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SRM's Stainless steel CNC precision engineered Norton twins pressure release valve, each one hand assembled and checked on a pressure jig to ensure correct seal and blow off pressure; the main problem with old PRV`s is the poor thread diameter, some original Norton valves were found to be 0.025" (0.63mm) undersize on the thread diameter, this allowed oil to bypass the valve to the blow off via the threads, this resulted in low oil pressure. Our valve helps eliminate this problem with the high accuracy of manufacture. Use BCS Part #06-6195/SS (SRM-06.6195A) - fits NORTON TWINS from '59 to '76. Pease check that your timing cover is the correct type to use this large pressure valve, as old bikes can sometimes have wrong parts fitted through their lifetime. Click here for installation instructions. (html)
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SRMPP1 BSA/Triumph 3 spring models - Use BCS Part #57-2156/A SRMPP2 BSA A50 A65 & TRIUMPH 4 spring models - Use BCS Part #57-1466/A SRMPP3 BSA pre-unit 4 spring - Use BCS Part #57-0986/A SRMPP4 Triumph 3TA 5TA 3 spring - Use BCS Part #57-2156/C SRMPP5 Triumph 3TA 5TA 4 spring - Use BCS Part #57-1466/B Click here for instructions. (pdf)
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Conversion taper
roller steering head bearings to convert A7,
A10, A50 and
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Rocker oil feed pipe CNC billet aluminium, for BSA A7 and A10. A Stylish replacement for the old copper pipe (which always leaks!). Use BCS Part #42-0048/A (SRM part number SRM-42.0048)
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T140 and T120 rocker oil feed pipe, made from CNC billet machined aluminium, the T140 pipe has the larger union for the oil hose connection, the T120 has the smaller diameter oil hose connection. Improves the look of the engine, matching the fin look of the cylinder head and the rocker boxes. Use BCS Part #71-3550/A T140 (SRM part number SRM-71.3350) Use BCS Part #70-6349/A T120 (SRM part number SRM-70.6349)
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BCS Part #67-0332/0333/A New Cam Follower Set for the A7 and A10 models are high quality hardened material with a stellite pad on the contact surface that runs on the camshaft lobes - much like the later BSA A65 and the Triumph twins.
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BCS Part #68-0473 SRM "Spitfire" Profile BSA A50 & A65 Forged Camshaft (for road use) New range of BSA camshafts are a stamped forging to give more grain structure and durability. They are then precision CNC ground, and then induction furnace heat treated to the correct hardness, resulting in the best available stock camshafts on the market today. |
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BCS Part #68-0362 A50/A65 Cam Followers (sold each)
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