Pros: -Super thick rubber

Cons: -Heavy...but all DH tubes are

Recommendation: Great DH tube. Made of super thick rubber. No pinch flats. Tire rolls true.

Pros: very thick tubes never have had a pinch flat yet

Cons: you will notice a differance in the roll.

Recommendation: it dont matter with slow rolling its a d.h. tube anyway.

Pros: Seriously beefy tube!

Cons: For a downhill application? None.

Recommendation: This is a heavy weight DH only tube that will help reduce your chance of flats when pinning it through the rough. Definitely not for a XC bike of any type.

Pros: Very tough

Cons: When installed it does change how a tire rolls.

Recommendation: Good tire for DH / FR reduces the chances of flats.

Pros: Better to have it and not need it than to need it and not have it.

Cons: none

Recommendation: yes, carry an extra

Pros: It's a tube

Cons: none

Recommendation: yes, always for a replacement

Pros: If I didn't know better, I'd say that they are as impenetrable as a preacher's daughter.

Cons: None

Recommendation: Great for aggressive XC, AM, any FR, and DH

Pros: Great tubes for downhill.

Cons: Very Heavy

Recommendation: Experienced down hill & free riders