How to tell if your horse needs a mid-season change of bit

We’re over a third of the way through the 2026 competition season, and if you’ve been training and competing for that whole time, you’ll be aware of the changes in your horse. Their fitness levels increase; they change shape and some sun on their back and the spring grass can make them feel different too. As our horses become fitter and stronger, the bit that felt perfect in March might not seem quite right by June.

That doesn’t always mean you need a stronger bit or a complete overhaul of your tack setup. Often, horses are simply telling us that something has changed and it’s worth paying attention before small issues become bigger frustrations. That’s why for this month’s blog; we’re taking a look at some of the common signs that your horse may benefit from a mid-season bit change and why these changes happen.

Why horses can change during the season

Horses will change physically throughout the year. Fitness work builds muscle, toplines develop, and young horses mature. Plus, they’ve even evolved to change shape in spring and summer, taking advantage of abundant food before they experience a leaner late autumn and winter.

Some horses become sharper or more enthusiastic once they’re out competing regularly. Others can become tired, heavy in the hand or even a little resistant if they’re finding certain work difficult. And factors such as dental changes, spring grass, busier warm-up environments at bigger competitions or changes in your strength and balance can influence how a horse feels in the contact.

That’s why bitting should never be viewed as a done and dusted part of our tack. As we said in the intro, the bit that worked beautifully during winter schooling might not suit the horse quite so well once they’re jumping bigger tracks, feeling well or stepping up a level.

Signs your horse may need a change of bit

One of the biggest clues that you need to look at their bit might be a change in consistency. The horse that was previously settled and happy in the contact may begin showing small signs of discomfort or resistance. This can include:
● Tossing or shaking the head
● Opening the mouth or crossing the jaw
● Leaning heavily on your hand
● Becoming over-sensitive or backing off the contact
● Pulling or setting against you
● Struggling to maintain a consistent outline
● Becoming fussy or unsettled during transitions
● Difficulty turning or staying straight
● Changes in confidence jumping or in faster work

Of course, these signs don’t automatically mean the bit is the problem. It’s always important to rule out pain, saddle fit and dental issues first. But once those areas have been checked, the bit is certainly worth revisiting.

Sometimes the issue isn’t severity at all

One of the biggest misconceptions in bitting is that stronger behaviour requires a stronger bit. Many horses become tense or resistant because they’re uncomfortable, confused or no longer enjoying the feel of the mouthpiece they’re wearing.

For example, a horse that suddenly starts leaning heavily on your hand may be seeking stability and comfort rather than needing more brakes. Another horse may become fussy because they’ve developed a better understanding of the contact and need a more subtle approach.

In some cases, moving to a different shape or a more anatomically designed bit can make a significant difference without increasing severity. This is where understanding mouth conformation becomes so important. Horses with large tongues, low palates or smaller mouths can all respond very differently to various shapes and designs - and remember, we can help you with our free advice line!

Think about the work your horse is doing now

It’s also important to think about whether your horse’s workload has changed since the beginning of the season. A horse that’s learning and moving up levels may benefit from a bit that offers clearer communication or stability as the work becomes more demanding.

Young horses are another great example. As they strengthen and gain confidence, their preferences can evolve surprisingly quickly. What helped them feel secure six months ago may now feel restrictive or unclear. We’re not suggesting you constantly change bits for the sake of it. Just stay open-minded and listen to the feedback your horse is giving you.

The value of trial and error

One of the challenges with bitting is that every horse is an individual. Two horses with similar builds and training levels can react completely differently to the same bit.

That’s why trialling bits can be so useful. Rather than purchasing multiple expensive bits outright and hoping for the best, being able to test different designs properly allows you to work out what your horse really loves.

At The Horse Bit Bank, our 30-day trial service gives riders the opportunity to experiment with a huge range of mouthpieces and cheekpiece designs to see what genuinely suits their horse best. Sometimes a very small tweak can completely change the way a horse feels and goes.

Don’t underestimate professional advice

It’s easy to feel overwhelmed by the sheer number of bits now available. Anatomical designs, tongue relief, lozenges, ports, barrels, rollers… the options are endless, and online advice can sometimes make things even more confusing.
That’s why our free bitting advice helpline is such a valuable resource. Jodie has years of experience helping riders work through these problems and can often identify useful options based on the horse’s way of going, mouth conformation and rider goals.

The key is staying curious and fair

Being willing to listen, reassess and make informed adjustments is always part of good horsemanship, and that extends to their bits as well. Even small changes can make a huge difference to comfort, communication and confidence for you both, so it’s worth taking the time to do.