Will a Litelock X1 tactical mount and Litelock X1 fit on a Cube Reaction Hybrid One 800 in large size?
Short answer:
probably, but it's not a dead cert on this bike - the tricky bit isn't the lock, it's the frame shape.
Litelok's own spec for the X1 Tactical Mount is a frame tube with a diameter between 23 - 63mm and a clear run of 150mm to clamp onto frame tubes with diameters from 23 to 63mm and a clear 150mm length for the Tactical Mount to clamp to. A separate independent review of the mount describes it slightly differently, as fitting most frame triangles as long as you have between 75mm and 200mm of space to work with - so treat "roughly 150mm of clear straight tube" as the safe planning number and use Litelok's printable template to double-check before you buy.
The bit that actually matters for
your bike: the ONE 800 has a Bosch 800Wh PowerTube fully integrated into the down tube, and the down tube itself is described as squared-off rather than round on the current frame - fixtures are bang up to date too with a UDH rear dropout, a bolted accessory mount under the flattened top tube and a bottle mount on the squared down tube. Reviewers flag exactly this combo as the common failure point for the Tactical Mount on e-bikes generally: many e-bikes have oversized downtubes housing their batteries, and those can be too bulky for the Tactical Mount to wrap around.
So on a large frame you've got two realistic spots: •
Down tube - likely too fat/squared where the battery lives, worth measuring before committing.
•
Top tube or seat tube - the mount's happy on any of these per Litelok's own line-up: it held both locks securely along the top tube, down tube, or seatpost. Top tube on a large Reaction should have enough straight, round section to work.
Practical move: grab a tape measure (or Litelok's printable template), check for 150mm of straight tube in the 23 - 63mm diameter range on the top tube - that's your most likely mounting point on this frame, not the battery-stuffed down tube.