Not all pistons are complete with box.
Bsa b40 piston rings.
Hepolite ref 15544 or bsa part number 41 0077.
Please select a category from the list.
79mm 20 at 7 1 compression.
If you do try and use b40 pistons your compression will be higher than using b44 pistons and need an even thicker head gasket.
1 piston with piston rings electronic ignition in the original box and carburettor bing model.
Some pattern pistons are heavier than the originals.
Piston assembly c w rings pin standard bore b25 tr25etc.
Piston b25 020 10 1 complete jcc emgo.
Piston assembly c w rings pin std t20.
A range of quality pistons suitable for a wide range of classic bsa motorcycles including the bsa c15 a10 a65 m20 and m21 models.
Genuine new old stock ae hepolite piston complete with rings gudgeon pin circlips.
Current availability is shown below.
Also piston ring compressors sizes 55mm 85mm.
Genuine used stihl part piston has a couple of marks on it as you can see in photos no piston rings.
Please note this is a genuine hepolite piston not the new hepolite brand which are made in taiwan.
Most of the pistons we stock are genuine hepolite or original bsa triumph norton royal enfield etc.
Piston ring and kits for bsa and triumph classic british motorcycles.
The b40 piston has a higher crown than the b44 by a few mm the b40 barrel deck height is not that different to the b44 but the b44 stroke is longer 90mm vs 70mm so not good for mocking up a 650 twin big bore barrel.
Piston assembly genuine triumph c w rings pin 020 oversize t20.
We also stock large quantities of piston ring sets.
Bsa a65 pistons 1962 72.
Bsa b40 piston 79 mm 0 40 nos new old stock piston rings packaging tatty and piston has light oxidation see photo.
All pistons are complete with rings gudgeon pins and circlips.
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We have asked the suppliers if they can reduce the weight the answer is that they can but at about 1000 tooling for each type.
Triumph bsa unit 1cyl models.
Piston assembly c w rings pin 060 oversize b40.
Piston b25 020 8 5 1 complete low compression b25 fleetstar piston made by je pistons in the usa made specifica.
Piston ring set 040 1mm oversized bsa b33 b34 gold star models nos made in england add to cart details quick view 00 3440 020 bsa m20 m21 nos bsa made in england.
Below are just a few examples of our range of pistons please contact us with your requirements.
We can frequently help with pistons for earlier models.