Stronger halfshaft options, what are they?

[Jonathan M3]

I've seen people using M coupe/roadster halfshafts, but are there any companies that sell a stronger than stock unit? Also, what do M coupe/roadster halfshafts usually go for, and are there any modifications needed to use them on a stock e30 4-lug rear suspension?

[JRowe]

Why? I saw this same post on bimmerforums. You don't need new half-shafts. Stock half-shafts almost never fail. People on this board and others have reliably put 350hp through them without a problem. Unless you're talking about 450+ hp, you shouldn't need anything else.

[Jonathan M3]

Unless you're talking about 450+ hp,

That is why, actually. I'm just trying to get some options in case the stock ones become a problem.

[gstuning]

On this board a M20B25 is pushing around 500hp trough a stock trans, diff and halfshafts,

If you are going to push more then that talk to the pro´s

[AdamF 88iS]

You might visit http://www.gkndriveline.co.uk and shoot them an email. I've never delt with them myself, but I'm curious to see what they are all about. The advertise is Racecar Engineering all the time and I'm thinking about a driveshaft from them sometime in the future.