I have a 1972 Model 85 and 1978 M213 Bultaco Alpinas Im looking to gear down to ride trials events MAVT. Does anyone know where I can get a 57 tooth rear sprocket ? Thanks

Mmmh 57 teeth, not commen ... I recently ordered a custom sprocket too Wüdo make custom sprockets in every teeth number in aluminium, numbers ad pattern for fasteners as requested, inner hole diameter too even a recess if in need. Last not least the would even mill a recess in the srocket if you need. The aluminium sprockets can too be anodized in many colors.

http://www.wuedo.de/menu_main/index/pdf/kettenrad_fertigung_form.pdf

Adress and contact data: http://www.wuedo.de/menu_main/index/index.html

Edited April 9, 201412 yr by pschrauber

Try www.rebelgears.com in Crossville TN. and search under Vintage Sprockets.

Thanks I will try these .

Talon engineering here in the UK are great. made me a 60 tooth Yes SIXTY Tooth 520 sprocket for my Sherpa Model 49 as I pull a sidecar with it. http://www.talon-eng.co.uk/product_category/sprockets/

Edited April 11, 201412 yr by p@ul250