Box Two Freewheel gear-size-38t EXTENSION: Maximum 230mm / Minimum

EXTENSION: Maximum 230mm / Minimum 175mm

is scrutinized to ensure the OS20 PowerBlock fully takes advantage of its larger size

Internal machining to keep the weight down and two engraved Sharpie Shield logos round out the new

Shell Width: 86

Available in Threaded option only

Box Two Freewheel gear-size-38t EXTENSION: Maximum 230mm / MinimumThe Box Two Freewheel is available in 16, 17, or 18 teeth and is made of heat treated chromoly. This particular freewheel was tested by the Dutch National BMX Team. With a quick engagement and 9 pawls this can be installed with Park Tools FR 6 or other installation tool designed for single speed freewheels with four notches that are approximately 32mm across measured inside to inside and 40mm outside to outside. FEATURES 1 8th or 3 32 Chain Compatible