BSA Gold Star - Five speed close ratio gearbox

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Designed to fit into the BSA pre unit gearbox shell, either standard with layshaft support bushes or RRT2 type using needle rollers. It is possible to convert the standard case to use needle bearings by replacing the standard layshaft bushes. Instructions can be found by clicking here.

It comprises of all the internal components for conversion to a five speed gearbox, the only original parts retained are the selector shaft and the selector pawl mechanism which connects directly to the gear lever.

The RRT2 speedo drive and standard kick start ratchet gear are retained, so that the gearbox may be used for both road and racing use.

NOTE: BSA 5 SPEED ROAD/TOURING GEARBOX NOW AVAILABLE: CLICK HERE

We offer two different camplates to give either shift pattern.

Our standard camplate gives 1 Down, 4 Up with a forward facing lever and standard footpeg position. This is sent as standard.

Our reverse camplate gives 1 Up, 4 Down with a forward facing lever and standard footpeg position. Please specify if you require this one when ordering.

If you have a different arrangement with rearsets and a different lever position please ensure you specify which camplate you require.



BSA 5 Speed Ratios >
1st 17 - 26 x DR 2.124:1
} 24.8%
} 20.0%
} 14.0%
} 9.1%
2nd 20 - 23 1.597:1
3rd 25 - 23 1.278:1
4th 24 - 19 1.100:1
5th 25 - 18 1.000:1
 
Overall reduction 1st - 5th 52.9%
BSA RRT2 Standard Ratios >
1st 1.754:1
} 24.4%
} 17.1%
} 9.0%
2nd 1.326:1
3rd 1.099:1
4th 1.000:1
 
Overall reduction 1st - 4th 43.0%

BSA Gold Star - Five speed close ratio gearbox

Price £1675.00

+VAT (if applicable) & Carriage

Availability: Call