UB55 Grey axle boots from Hostile Racing Products.These boots are strong, durable and allow the use of any type of high quality grease. Hostile does not suggest the use of an install tool. For use with standard sized HPI 22mm 5B and 5T cups as well as aftermarket cups and axles.
Not for use with the Baja SC/25mm cups.
For more information, please visit this products webpage.