Description
W399
Cannondale
Replaces Cannondale Part #K33009
For 12 x 1.0 Thru Axle (Double Lead Thread)
SystemSix Carbon (with Speed Release Axle) – 2019+
SystemSix HM (with Speed Release Axle) – 2019+
SuperSix EVO (with Speed Release Axle) – 2019+
CAAD13 (with Speed Release Axle) – 2019+
Topstone Carbon (with Speed Release Axle) – 2019+
Note: DROPOUT W399, which replaces Cannondale Part #K33009 is for M12x1 double lead threaded axles (Cannondale Speed Release). For regular M12x1 thru axles, use our CC1024 which replaces Cannondale # KP419 K33049
What is a Double lead thread?
Some thru axles, most notably Speed Release, use fine thread with a “double lead.” This means that there are twice as many threads which makes it faster to start threading the axle into the frame or fork.
All Speed Release axles are found on frames and forks with one open dropout. In addition, the thru axle is notched to ensure it doesn’t fall out accidentally.