Isaac have issued a voluntary recall on all complete bikes and framesets made since 2004 after discovering that certain stem and spacer combinations can cause the fork steerer to fail.
If you've got a post-2003 Isaac, you need to take it to your dealer who'll be able to check for signs of damage and also fit a new expander to the steerer.
Other recommendations include:
- Profile Lava 3D stems to be replaced by a compatible stem
- FSA OS99 stems with an inner collar (where the clamp meets the main stem tube) measuring less than 5mm need to be replaced
- Max 30mm of spacers beneath the stem, and a max stem clamp height of 45mm.
- assembly instructions from the manuals at http://www.isaac-carbon.info/17.0.html?&L=1 must be adhered to when rebuilding the bike
Download the PDF below for more information. If you own an Isaac and you have any questions, contact your local dealer.
Dave is a founding father of road.cc, having previously worked on Cycling Plus and What Mountain Bike magazines back in the day. He also writes about e-bikes for our sister publication ebiketips. He's won three mountain bike bog snorkelling World Championships, and races at the back of the third cats.