What size of ARB on Sportline?

Hi everyone,

Does anyone know what size the front ARB is on a 1991 Sportline Carbrio? I've got the choice of 15mm, 17mm or 21mm when buying bushes. Thanks.

When I replaced my front ARB bushes with poly bushes the guy from PRI racing told me the standard bars are 17mm but step down to 15mm for the end bushes that bolt to the wishbone. Aftermaket ARB is 17mm throughout. best bet is to measure with calipers or a 17mm / 15mm open ended spanner. Mine was 17mm throughout so i'm guessing it had been replaced before I purchased it.

Thanks. Ordered the 17mm inner and 15mm outer from Volksbits. On eBay Volksbits sell them for £4.99 each, I called Volksbits and the price was £2.99 each… must remember to call in future.