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SWITCH/MTN Q-LOC 2 Fork Thru-Axle

  • Updated

The Serial 1 SWITCH/MTN features a host of technologies to help you Enjoy Every Ride. For front suspension duties, we’ve partnered with SR Suntour. The SR Suntour ZERON35 BOOST AIR provides 120mm of controlled travel and is specially tuned for the added weight and additional speed of a high-performance eMTB. The ZERON35 BOOST AIR suspension fork can handle any situation you subject it to. 

To securely hold the front wheel in place, the ZERON35 uses a unique thru-axle design called the Q-LOC 2. This easy-to-use design allows for quick removal of the front wheel for transport and service without requiring any tools, but there is a brief learning curve. 

SR_Suntour_collett_open_axle_removed.JPG

To use your Q-LOC 2 you’ll follow the steps below:

  • The lever will be closed while the wheel is installed on your bike. Flip the lever outward 180 degrees to the ‘open’ position (the lever will show the word ‘open’ when you have correctly performed this step). The lever will now rotate freely in the fork dropouts.

SR_Suntour_lever_closed.JPG SR_Suntour_lever_open.JPG

  • Push the barrel on the opposite side of the lever toward the centerline of the bike. This reduces the diameter of the collet; when the collet diameter reduces, rotate the barrel clockwise to lock the system in its reduced state. The Q-LOC 2 axle will now freely slide out of the dropouts.  

SR_Suntour_closing_collett.JPGSR_Suntour_collett_closed.JPG

SR_Suntour_axle_removed.JPG

  • To reinstall the Q-LOC 2 axle, rotate the barrel counter-clockwise to allow the collet to expand. Once the collet has expanded, the Q-LOC 2 axle can be inserted back into the dropout, thru the wheel and out the far side dropout.  

SR_Suntour_barrel_1.JPG

  • With the lever in the open position, rotate the barrel to obtain the proper amount of “preload” on the Q-LOC 2 axle. If the lever is too difficult to move to the closed position, open the lever again and rotate the barrel counter-clockwise to reduce the preload on the Q-LOC 2 axle. If the lever closes too easily, open the lever again and increase the preload by rotating the barrel clockwise. The proper amount of preload will require some effort to close and open but not be so difficult that it couldn’t be done easily on the trail. Orient the lever so that in the closed position it parallels the fork legs.

See the video here for a visual step-by-step:

https://www.srsuntour.com/technologies/q-loc-system/