Rennen Adjustable Crank takes the guesswork out of what crank sizes should be used. Adjust your childs crank size between practice sessions with a single wrench. Never before has it been so easy to evaluate crank arm size.
29 Size adjustments from 90mm through 160mm in 2.5mm increments can accomodate you from 3-13yrs old.
Total weight 507g (1lb 1.85oz)
Machined from 7075-T6
Ultralite Spider compatible
Square Taper Crank Compatible, check out our Ultralite BB
Need a way of validating your testing consider a Rennen Smart Sprint
Quick changes can be made using a 20 spline BB tool. Check out our friends at Pedros for a great tool Here
**Product carries a 125lb weight limit**
**Correct installation is required for proper use, all fastners must be tight.**
**Damage to the arms can occur if the lockrings are not correctly tightened**
**Set Screws located in lockrings are used as a locking feature these must be lossened before removal of the lockring and tightend after securing the lockring in place**
****Does not include spider, sold separately.
Note: Rennen Products will be shipped to you separately from any other items ordered on BRGstore.com and will ship direct to you from from Rennen. Rennen products are made to order, due to the options of sizes and colors. Each order will be produced once ordered and will be shipped to you when ready, but the production time could be extended up to 2 weeks on some orders, depending on Rennen’s production schedule. All Rennen purchases are a final sale due to the method of order from BRGstore.com and are not eligible for return or refund.