Blackburn Trak Block II Bicycle Stabilizer for Indoor Bicycle Trainers

Wide, stable platform to level the front of the bike when riding a trainer
Fits 650c, 700c and 26-inch wheels

Customer Rating:
Summary: It's darn good piece of plastic
Comment: That's the hardest working piece of plastic in show business. It's better than using an old phone book.

Customer Rating:
Summary: blackburn stabilizer
Comment: this product works fine it keeps my front wheels from turning while I am
working out on my stabilized bike.

Customer Rating:
Summary: Great block for the price
Comment: This block/riser is very stable and hugs the tire nicely. Certainly a good value.

Customer Rating:
Summary: Works well....
Comment: not sure a phone book or routed wood block would'nt do the same as the bike is already stable. This just adds height for my set up.

Customer Rating:
Summary: Is this necessary?
Comment: I purchased the block because it was recommended to go with an indoor trainer. I received my indoor trainer and love it, but not sure why I need the block. I thought it may be to hold the front wheel steady, but it seems fine without a block. Looking at the block I decided it must be to raise the front wheel up, but my wheel does not need raising. I quess some people need the block, but it is not for everyone.