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Whether you want to adjust your saddle position backwards, forwards, up or down, making adjustments to the saddle & seatpost is very simple, however there are a few things to be cautious of when making these adjustments to avoid damaging parts on the bike. We outline how to do this correctly below.
Seat posts come in single or twin bolt varieties. Regardless of style, they all work in pretty much the same way, by sandwiching the saddle rails and allowing adjustment of the angle at which the saddle sits.
To adjust the saddle, you will need to loosen the seatpost bolts. These bolts are normally on the underside of the seatpost. You’ll need to turn them clockwise as viewed from above the saddle.
For designs with two bolts, loosen them evenly, turning each a little at a time. Single-bolt designs usually require a 6mm Allen key while a 5mm Allen key is more common for twin-bolt set-ups.
Adjusting Fore & Aft./ Saddle Angle:
With the bolt (or bolts) loose, you can slide the saddle rails forwards or backwards in the cradle to the desired position.When making this adjustment, it is crucial to keep the rails within the maximum adjustment markings (shown in photo below). Failure to do so can result in damage to the saddle, seatpost, and the frame at times.
Saddle angle adjustment for Single-bolt seat posts:
It's best to keep your saddle angle flat rather than tilted up or down. With single-bolt designs, just loosen the bolt and rock the cradle into your desired position. When making this adjustment, you want to make sure that the cradle engages the adjustment splines and is not sitting between/ on top of the splines prior to fully tightening. Failure to properly make this adjustment can cause the adjustment splines to become stripped deeming it unusable, and will allow the saddle to slip while riding.
Saddle angle adjustment for Twin-bolt seat posts:
With twin-bolt designs, tightening the back bolt will tilt the saddle upwards, tightening the front one, will tilt it downwards. You'll need to balance the two before doing them both up quite tightly.
Once you've set the the saddle angle, and fore/ aft, you can now fully tighten down & torque the seatpost. We highly suggest using a torque wrench to set the torque to the proper specification. This can sometimes be found on the seatpost near the bolt, otherwise this information can be found in the user manual for your bike. Failure to properly torque the seatpost can result in the bolt(s) snapping, stripping, or bending which can cause the saddle to break free from its fixed position.
Saddle or seat height, is one of the most important adjustments in regards to comfort and efficiency. Having a seat that is too high or too low, at worst can cause injury and at best will make the bike much more challenging to pedal. Here are a few tips on how to get the perfect height.
- On 99% of bikes out there, correct saddle height will result in the rider not being able to place their feet flat on the ground from the saddle. Coming forward off the saddle to stop, is the correct and safest way to do so.
- Knee pain is typically one of the first indicators that the height is incorrect. Pain in the front of your knee, means the saddle is too low. Pain in the back of the knee, indicates the saddle is too high.
A good way to get a reliable starting point is to use the following method.
1. Move the bike to a place where you can hold on to a wall or countertop or railing. Once there, get on the bike in your normal riding position.
2. Set the saddle so that your knee is just at the point of locking out when you have your heel on the center of the pedal and the crank is all the way down.
3. This will ensure that when you actually go to pedal with the ball of your foot, you will have a perfect slight bend to your knee.
Seatpost Replacement, Modification or Upgrade
Considering upgrading? Read this first. Before ordering, remove your seat post from your bike and verify the outer diameter stamped on it (may be difficult to see as it is black on a black background). Example of most seat post size stampings:
Many riders prefer to dial in their new bike to fit their needs. Not only is it fun to accessorize your bike but also important if you will be logging a lot of miles.
That being said, it is best to try out the seat post and saddle that comes with the bike before upgrading to a larger saddle, longer seat post or a suspension seat post.
If you do decide you need that upgrade it is important you verify the seat post diameter on your bike. Over time, we make changes to the bikes, so asking online or checking online is not the best way to verify your seat post diameter.
Curious about learning more? Check out this bike education blog below: