With a superb degree of height and angle adjustment, stiffness and the super lightweight Gorilla cage, the Xlab Delta 425 ISM Compatible Rear Bottle Cage System is the ideal saddle-mounted bottle cage for the performance-driven triathlete or Ironman competitor. Only compatible with ISM Adamo saddles with transition hooks, Adamo Attack and PN 1.1 saddles, this saddle has anti-vibration locking hardware that secures the cage and the bottle in place.
Weighing just 165 grams, the XLab Delta 425 offers a pro level of stiffness and reliability, thanks to its durable alloy arms. One of XLab's most popular bottle cages, the carbon fibre Gorilla provides a tight 10lb grip on your bottle so you don't have to worry about it slipping out. Unlike many other saddle-mounted hydration systems, that mount to the seatpost, the XLab Delta 425 mounts directly to the saddle, which hides the Delta 425 behind the saddle for a greater level of aerodynamic performance.
Having tried other options for the ISM saddle, this is the only one that fitted properly. Once done up properly it doesn’t budge. Bottle is gripped very firmly. The saddle bag has to be packed carefully due to irregular shape. Pity the price didn’t include the saddle bag.
Simple to install and fits perfectly attached to my TT seat. I have an ISM seat with a TT hook and this holder works great. No bottle launches, super firm hold and overall great product.
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
17 questions answered
Hi Emma, I'm afraid this will not be possible, The system requires both saddle rails, Many thanks Joe W
Hello, I can confirm that this would fit one bottle. Many Thanks Liam
Hi Luke, I'm afraid that this model isn't compatible due to the hook on the rear of the saddle making this incompatible. Perhaps if you could let us know which bike you have we could see if there is an alternative way of mounting an additional water bottle cage. If you'd like us to look into this for you please, email customercare@sigmasports.com and we will do our best to provide an alternative. Kind regards, Liam
