18.5 inch Saddles - Used and Second Hand Saddles
18.5" is the largest standard seat size in the UK saddle market and suits the tallest adult riders, riders with notably long legs, and heavier-built adults on full-sized sport horses. It's genuinely uncommon — most adult riders sit at 17" to 18" — so new off-the-peg availability is limited, and the used market is often the most realistic route.
We list 18.5" used saddles as they come in. Stock at this size is small by category but builds steadily over time across GP, jump, dressage, monoflap, event and adjustable types. Brands most commonly seen at 18.5" on Sheepham include Albion, Bates, Black Country, Fairfax, Kent & Masters and Stride Free.
How does the 5 Day Trial work?
Step 1 - Choose your saddles
Step 2 - Test ride and compare for 5 days
Step 3 - Arrange collection of unwanted saddles
Step 4 - Receive a refund
FREE Gullet Change
When you purchase an eligible saddle, select the correct gullet size and we’ll fit it for you at no extra charge.
Request a Saddle
If you can't find the specific second-hand saddle you're looking for, our Request a Saddle service allows our expert team to scour our extensive network to find you the perfect saddle and ensure the best fit for you and your horse.