poida,
My ram tubes I use on my 2T with 44mm Mikunis are 75mm long. The motor has had a few other mods and gave 74rwkW and is very drivable.
The longer the ram tubes are the more torque you gain down low and mid range, but you tend to move it from the top end.
If you rally you look for more torque down low for drivability.
If you drag race or road race then you look for more power up high in the rev range.
I have my source and I can supply sets for 40mm Solexes. From memory (not at home yet) they are 75mm long.
They come in; natural polished alloy and blue or red anodised.
The ones in my avatar are from Mikuni and are hard to get now.
This is about as long as you can go before running out of space against the brake master cylinder.
People have made longer ones which curve around and down to fit.
See my "throttle cable setups..." thread and down at the last post you'll see the ones I supply in the pics of a 2T-G set up.
PM me for pricing.
Regards
Rodger
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