[AzCal Retred]

Hitchcock's has all the bits. They fit and are just a couple days away. The forged bits are in "accessories". I have one, it replaced an OEM unit that had "soft seized" on a gradual uphill on a coolish day. You don't have to think about the pistons personal comfort anymore with a forged unit.

OEM pistons are notoriously soft and have a dismaying variety of failure modes. The forged units bring the guts of the machine into the 21st century just like the modern machines. This particular piston is for the stock 6.5/1 CR as it retains the easy-going, easy-starting properties of the basic Bullet. There is a 8.5/1 version as well, but there are many practical reasons to stay with the stock CR. If you live in a summertime "hot" area (>105F/40C) maybe an alloy cylinder as well would be wise.


https://accessories.hitchcocksmotorcycles.com/23260?cont_shop=Shop-Engine-Upgrades&Model=500%20Bullet%20Indian%20Export%20Spec

PART No. 90204
PISTON COMPLETE, STANDARD, FORGED, 84mm (Omega/Accralite)
£160.00

Product Details
PISTON COMPLETE, STANDARD, FORGED, 84mm (Omega/Accralite)

This is an English made forged piston which is a straight replacement for the standard piston. Made by Omega, it gives a very strong and robust piston without changing the standard compression ratio of approximately 6.5:1 It is supplied with rings, gudgeon pin and circlips.
Size = 84mm (STD)

Suitable for all 500 Bullets from 1953 EXCEPT: Electra X and EFI models. See ''Fitting Guide'' for details.

[Esa]

Please note; a forged piston is not a straight replacement to standard piston, it always requires honing of cylinder to bigger clearance.

[Monkee]

Hitchcock's has all the bits. They fit and are just a couple days away. The forged bits are in "accessories". I have one, it replaced an OEM unit that had "soft seized" on a gradual uphill on a coolish day. You don't have to think about the pistons personal comfort anymore with a forged unit.

OEM pistons are notoriously soft and have a dismaying variety of failure modes. The forged units bring the guts of the machine into the 21st century just like the modern machines. This particular piston is for the stock 6.5/1 CR as it retains the easy-going, easy-starting properties of the basic Bullet. There is a 8.5/1 version as well, but there are many practical reasons to stay with the stock CR. If you live in a summertime "hot" area (>105F/40C) maybe an alloy cylinder as well would be wise.


https://accessories.hitchcocksmotorcycles.com/23260?cont_shop=Shop-Engine-Upgrades&Model=500%20Bullet%20Indian%20Export%20Spec

PART No. 90204
PISTON COMPLETE, STANDARD, FORGED, 84mm (Omega/Accralite)
£160.00

Product Details
PISTON COMPLETE, STANDARD, FORGED, 84mm (Omega/Accralite)

This is an English made forged piston which is a straight replacement for the standard piston. Made by Omega, it gives a very strong and robust piston without changing the standard compression ratio of approximately 6.5:1 It is supplied with rings, gudgeon pin and circlips.
Size = 84mm (STD)

Suitable for all 500 Bullets from 1953 EXCEPT: Electra X and EFI models. See ''Fitting Guide'' for details.

where i live the ambient temp ranges from 30c to 44c . The alloy cylinder and forged piston do sound like a good investment, though the ones you linked appear to be for the iron barrels?

[AzCal Retred]

Yuppers, Yron Barrle bits for the Yron Barrle section...

The newer machines (UCE & up) already have decent alloy barrels and high silicon(?) pistons. Good high viscosity oil (20W50) in the summer seems to be all they need.

The OEM IB pistons can shuck the top, drop a skirt or stick when they feel abused. A forged or modern high silicon piston can save a lot of grief. The alloy barrels are definitely noisier though.