The Tuning Works spring Made in the UK for Aprilia Mk1.
(they only have 1 spring although the default picture shows 2)
This spring unlike most after market springs is linear rather then progressive and rates 15% stiffer than the stock spring.
You can send your Forks to TTW to be converted:
http://www.thetuningworks.co.uk/store/product_info.php?products_id=1326
Made in the UK:
255 mm
1.5kg/mm
35 mm max o.d.
24 mm i.d. aprox
120 mm travel
c/g end
