I just bought a carbon bar (Ebay). Orbea Zeus. Can I use this with my alloy Specialized Pro Set stem? Should I get the Ritchey torque wrench?

Thanks,
Jim

Yes you can put a carbon bar on an alloy stem. A 4 bolt face plate is recommended, which I believe you have. A torque wrench is also recommended, which helps to avoid cracking the bar and leading to you making a faceplant on the ground.

+1 on urbanknight's post. Alloy stems are pretty well the norm even on high-end bikes with carbon bars. I'm not sure how much the Ritchey torque wrench costs, but the plain beam style park tool wrench is what I use for most of the lower torque bike stuff. Sometimes it isn't very convenient to not have the ratchet, but it isn't a big deal.

https://www.amazon.com/Park-Tool-Torq.../dp/B003RZNZ0M

yes you can. you wont run into any problems.

I run a carbon bar with a 4 bolt head alloy stem. No issues. Use a torque wrench and some carbon assembly paste.

I don't even think you need carbon assembly paste with aluminum/carbon. I think that is used more for carbon/carbon because two carbon surfaces are more prone to slipping.

Thanks everyone, especially for the tip on Park torque wrenches.

Jim

You don't even need a torque wrench

He needs a torque wrench.

i thought it also helped to prevent galvanic corrosion between aluminum and carbon surfaces (e.g. carbon seat posts getting seized in aluminum frames or vice versa). i'd use some...it won't hurt.

yes, you do.

Precisely. Just tighten until you hear a crack and then back off slightly. Should be about perfect