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17 Tooth Sprocket (+1 Tooth from Standard) – BSA Goldstar

(14 customer reviews)

£14.99

Top quality 17-tooth sprocket made by JT

To replace the standard 16-tooth sprocket

Will fit without any modification to the chain

Allows for more chain adjustment with the standard chain

Reduces revs at higher road speeds, for more relaxed cruising and improved fuel economy

No noticeable decrease to acceleration and allows you to hold on to each gear longer

In stock

Quantity:
Rating
5.0 out of 5
Based on 14 Reviews
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Kevin K.
June 23, 2026

Very easy ordering and fast delivery Thank you

Andrew S.
October 3, 2025

17 Tooth Sprocket (+1 Tooth from Standard) - BSA Goldstar

Stephen F.
October 2, 2025

Goldstar sprocket replacement

A simple job if you have a suitable centre lift. The chain has no split link, but this job can be done without splitting, just slide the rear wheel forward. Improved the gearing with no apparent reduction in performance. Now much less frantic for multi-lane cruising.

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Mark L.
August 30, 2025

BSA tail tidy and front springs

Arrived on time not difficult to fit with decent instructions on UTube. Need time to fully test.

Nicholas F.
May 12, 2025

17 Tooth Sprocket (+1 Tooth from Standard) - BSA Goldstar

Larry J.
May 3, 2025

That little bit extra

Simple to fit and makes the bike that much better in the gears

Stuart P.
April 19, 2025

BSA 650 Gold Star 17t sprocket

My order arrived quickly and was well packed. Fitting was straightforward, although an impact gun certainly made things a lot easier to remove the sprocket retaining nut. The extra tooth/higher gearing makes the bike less “revvy” at higher speeds, but has no noticeable detrimental impact on acceleration. I’ve found that riding in urban traffic is also improved, with these speeds sitting at a sweeter spot in the rev range, meaning they’re not in the “in between gear” range.

Jean-François M.
April 2, 2025

Bien reçu, pas encore essayé

David L.
January 5, 2025

Great Service

Does what it says in the tin. Excellent delivery service to me down in NZ. Cheers folks.

Ruedi W.
November 19, 2024

Very fast and correct order processing. Perfect communication and and high quality of the part. Many thanks

Dennis M.
August 25, 2024

Useful upgrade

Having fitted the slightly larger front sprocket and ridden it twice since I found the rev's are much more comfortable for motorway speeds, slightly less revs, and the mirror vibration is much better. I live near the A10 and A1 so frequently use the dual carriageway/motorway. When cruising at 70 the rear view was obscured by the vibrations of the engine, but now the rear view is good. So safer and more comfortable.

Geoff N.
December 7, 2023

Sprocket

No fitted yet but very good quality and looking forward to fitting it and riding.

Vincent H.
October 9, 2023

17 tooth front sprocket

As always Tec have thought about what we need to improve our modern retro bikes. The sprocket raises the gearing and allows easier cruising but also makes the lower gears more useable because for me they were a little too low as with many modern bikes. Yet another'well worth having' mod from Tec and I will eagerly await more of them.

Kenneth R.
October 5, 2023

17 Tooth Sprocket (+1 Tooth from Standard) - BSA Goldstar

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