If you ride an ebike, this is the ABC Cage we recommend. Ebike frames are crowded: batteries, wide down tubes, and rear racks often leave no room to drop a bottle straight down into a normal cage. The Sidewinder loads from the side, so you can get a full-size bottle in and out even in tight spaces, and that same side access makes it far easier to reach the mounting bolts on a cramped ebike frame. Available in seven colors: Black, White, Blue, Green, Yellow, Pink, and Olive Drab. Match your frame, match your bike's accent color, or go bright so you can spot your bottle at a glance. Why the Sidewinder is our top pick for ebikes Solves ebike clearance. Side loading lets you insert and remove bottles where a top-loading cage will not clear the battery, frame, or rack. Easier to mount. Side access makes it simpler to reach bottle-boss bolts on tight ebike frames. Fits almost any bottle. Adjustable from 2 1/4" to 4 3/4" wide, from water bottles to large sports and insulated bottles. Left- or right-handed. Mount it to load from whichever side works best for your setup. Seven colors. Black, White, Blue, Green, Yellow, Pink, and Olive Drab. Secure hold. Keeps bottles of all sizes rattle-free, even on rough terrain. How to tell if you need a side-load cage The quickest test takes about ten seconds. Put a full-size bottle where you want it to sit on your frame, then try to lift it straight up and out. If it hits the top tube, the battery, the seat, or the rack before it clears, a standard top-loading cage will not work there and you want the Sidewinder. Step-thru and low-step frames. The shortened front triangle is the most common reason a bottle will not clear on an ebike. Downtube-mounted batteries. Integrated and semi-integrated packs eat exactly the space a bottle needs to lift out of. Folding ebikes. Compact frames rarely leave enough vertical room above the bottle bosses. Tall or insulated bottles. Even on a roomy frame, a 4 3/4" insulated bottle needs more clearance overhead than a slim road bottle does. Plenty of room to spare? Then the standard top-load ABC Cage works fine and costs the same. No bottle bosses on your frame at all? Neither cage will bolt on. Use the 18" strap mount, which wraps tubes up to 7 1/2" in diameter, or the handlebar mount to move the bottle up front. Side-load bottle cage FAQ What makes a side-load cage better for an ebike? Ebike frames are crowded in exactly the place a bottle needs to travel. Batteries, wide down tubes, step-thru geometry, and rear racks all block the vertical path a top-loading cage requires. Loading from the side removes that constraint entirely. What colors does the Sidewinder come in? Seven: Black, White, Blue, Green, Yellow, Pink, and Olive Drab. All seven are the same cage at the same price, so pick whichever suits your bike. Which side does it load from? Whichever you prefer. It can be mounted to load from the left or the right, so you can set it up for your dominant hand or work around whatever else is on your frame. Do I need bottle mounts on my frame? Yes. The Sidewinder bolts to standard bottle cage bosses. If your ebike has no bosses, use the 18" strap mount or the handlebar mount instead. Will the bottle fall out sideways? No. The cage adjusts to grip your specific bottle from 2 1/4" to 4 3/4" wide, so it holds securely on rough terrain. Side loading changes how you get the bottle in and out, not how firmly it is held once seated. What size bottles does it fit? Bottles from 2 1/4" to 4 3/4" wide, covering standard water bottles, large sports bottles, and most insulated bottles. Measure the widest point of your bottle to confirm. Is it worth it if my frame has plenty of clearance? Not necessarily. If a bottle lifts straight out without hitting anything, the standard ABC Cage does the job at the same price. The Sidewinder exists to solve a clearance problem, so buy it if you have one. Does it work on regular bikes? Yes. Any frame with standard bottle cage bosses will take it, ebike or not. It is just that ebikes are where the clearance problem usually shows up.