The measuring cups in the kitchen aren’t for bike work — and eyeballing fork oil straight from the bottle is how you end up with one fork stiffer than the other. This is a proper 100 ml graduated cylinder for measuring fork oil to the exact amount your forks call for.
Fork oil is filled by volume, the amount changes how the front end damps, and the two legs need to match. Eyeballing it gets you a front end that works differently side to side. A graduated cylinder lets you measure the exact amount and pour the same into both legs — a must-have for a front fork rebuild or oil change.
Drain your old fork oil, pour fresh oil into the cylinder up to your model’s specified amount, and tip it into the fork through the top (the spout keeps it clean). Measure the same amount for the second leg so both sides match. Not sure how much your bike takes? Our Maxima Fork Oil page lists the per-leg amount for every model.
You can see it in use in our fork-oil-change video:
Measuring fork oil. Forks are filled by volume, so when you do a fork oil change or rebuild you need a precise amount — and the same in both legs. This 100 ml cylinder makes that easy and repeatable.
It varies by model, and even by year on some bikes. Rather than guess, check the per-leg chart on our Maxima Fork Oil page, then measure that amount in the cylinder.
You can in a pinch, but a tall, narrow cylinder is easier to read accurately than a wide cup — and you won’t want oil residue in something that goes back in the kitchen. This one stays in the shop.
Yes — it’s polypropylene, the same oil-safe plastic used for measuring fork oil and similar fluids.
Last updated: June 2026
