S2 and S3 side stands are the same length but you have to drill one side of the S2 hole for the H2 bolt to fit. On a S3 side stand , no modification needed, you don’t need to drill it, it’s the same bolt.
S2 $73 shipped in the USA.
S3 $79 shipped in the USA.
If interested. PayPal:
5kawitriples@gmail.com
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Current bikes: H1 69,71,72,76 KH 500, H2 72(2),73,74,75(3) , 77RD 400, 08 KLR 650. 76 KZ 900, Yamaha RZ 500, ihave so many triples gave up listing them.
Have seversl tons of H1/H2/S parts for sale,
http://www.triplestuff.net dhg1337@gmail.com