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Questions and answers about sports

Fork MTB clearance problem

5 min read

Asked by: Raul Seawell

What happens when you increase fork travel?

Any increase in fork travel will slacken the bike and shorten its reach. Slacker head angles boost confidence in steep descending terrain, but they make a mountain bike less agile at climbing technical singletrack as well as unbalancing the bike by moving the rider’s weight backward.

How much does fork travel affect head angle?

Bumping the fork travel up by 20mm, to 150mm, will slacken the head angle by approximately 1° and increase the front centre measurement by 10mm.

How do you reduce fork travel?

Typically, an air fork achieves travel decrease/increase with the addition/removal of spacers on the air spring assembly, respectively. This effectively will reduce the air chamber size (travel decrease, spacer added) or increase the air chamber size (travel increase, spacer removed).

How much does fork travel affect reach?

As the fork gets longer, it raises handlebars up and slackens the head tube angle. As a rough estimate, each 20mm of travel added will correlate to a one-degree difference in the head tube angle.

Can I put 150mm forks on a 140mm bike?

You’ll be fine either way. It’s only when you go up or down more than 25mm in travel that you really have to worry: You’re likely to end up negatively effecting your geometry and risking damage to the frame.

Can I put a 140mm fork on a 100mm bike?

There is no good reason to slap 140mm fork on a frame that is designed for 100. It will no ride better and it may break, like many other already noted.

Is more fork travel better?

The more travel a fork has, the bigger, heavier and stiffer the fork will be, so the chassis will be designed to reflect these demands too. The payoff for having a burlier fork chassis that’s more capable on the descents is that it will feel big and cumbersome on the climbs.

Can you put a 130mm fork on a 100mm bike?

at 130mm you’ll probably be fine, I wouldn’t put anything bigger on there. The kona frames are pretty strong, I used to run a 130mm fork on my 100mm jump bike for AM and a lottle more FR riding, I was fine.

Is a 67 degree head angle slack?

The head tube angle is the angle of the head tube in relation to the ground. A “slack” angle is anywhere from 63 to 66 degrees. This means the fork of the bike is going to stick out farther, creating a more stable ride at high speeds, but also be slower handling.

Can you shorten MTB fork travel?

Yes you can probably reduce the travel by cutting down the air shaft on a RockShox fork (Lyrik/Yari/Pike design).

Can you change Fox 36 160mm to 170mm?

Yeah it works easily. Changed my 160mm F36 Root beer Fork to 170mm air shaft.

Can a Fox 36 go to 170mm?

With the introduction of the Fox 38, the 36 is no longer available with 170mm travel as stock, but 150mm or 160mm of travel instead. Don’t think it’s any less capable though, with Fox claiming the new 36 is stiffer than its predecessor, and that the performance of the air spring is hugely improved.

How much sag is 140mm fork?


For fork sag you should be aiming for 25% sag. So a 140mm travel fork should have 35mm of sag.

Should I upgrade my MTB fork?

Generally, the more money you spend you get better performance, in trail and XC forks you get a lighter weight fork and a better feel, on trail/enduro forks you normally get better performance, stiffer chassis, and more adjustments.

How much travel should a hardtail have?

Quote from video: Похожие запросы

How much difference does 20mm of travel make?

Adding travel to your fork is a go-to for many riders because not only does it change your geometry but you’ll also reap the rewards that a bit more travel offers. As a rule of thumb, an extra 20mm of travel will equal 1° of angle adjustment and 10mm of growth in its front centre.

How does fork length affect handling?

Fork offset affects the trail (see below). Longer offset results in less trail, which makes for a lighter but twitchier steering feel. Conversely, shorter offset forks increase the trail, which makes for more stable, heavier steering especially in steep corners or bumpy sections.

Can I put longer forks on my motorcycle?

Adding more than 10mm to your axle to crown length may cause stress on your frame that it wasn’t designed to handle. Also, adding a longer fork usually voids the warranty on the frame. The ride effects of a longer fork will be a slacker head tube angle, and higher bottom bracket.

Can I put 140mm forks on a 120mm bike?

Going from 120 mm up to 140 mm should be perfectly fine.

Can you put a 130mm fork on a 100mm bike?

at 130mm you’ll probably be fine, I wouldn’t put anything bigger on there. The kona frames are pretty strong, I used to run a 130mm fork on my 100mm jump bike for AM and a lottle more FR riding, I was fine.