How do I know what size rear shock I need?

How do I know what size rear shock I need?

The most accurate method for shock measurement:

1. Measure the eye to eye length.
2. Attach a shock pump and slowly remove all the air from the shock.
3. Compress the shock fully and measure the eye to eye length again.
4. Subtract this measurement from the initial eye to eye length to find the usable stroke. (ie. 185 – 132.5 = 52.5)

Can I put a bigger rear shock on my bike?

If you buy a shock that is too long for your bike, it will work well, but it can also damage it. The shock may be too long if your rear tire has moved at all after you installed it. Parts of the frame of your bike may also touch that aren’t supposed to, causing unnecessary damage.

Are all shock eyelets the same?

The eyelet dimensions are similar between all brands that use a 1/2″ eyelet, but tolerances vary. Fox tolerances seem to step between dead on for size and what I call +1 oversize. Marzocchi Roco seem to vary between +2 and +3 oversize, some stratos shocks were -1 undersize.

How do you know if your rear shocks are going?

“The best method for measuring frame travel may be to remove the shock and measure the vertical travel at the rear axle, with the suspension linkage at the full shock length, and at the shock bottom-out length (original eye-to-eye minus manufacturers specified shock stroke).

What is the stroke on a rear shock?

The stroke length is the amount by which the shock compresses when fully loaded. Again this is not the amount of travel available – a shock with a stroke length of 2” may for example be used on a bike with 4” or 5” of travel, depending on the suspension design.

What size spring do I need for my rear shock?

For example, if your shock stroke is 2″, your max spring free length is 130mm and your spring rate is 450lbs, you need a spring that is 2.25″ x 450Lbs x 125mm (if you don’t see a spring that has the exact stroke of your shock you can use a spring with a longer stroke, as long as the free length will fit).

How does a rear shock work?

Rear shocks consist of two telescopic tubes which slide into each other, a spring of some type and an eye at either end through which the whole mechanism is affixed to the frame. A small bushing (a type of simple bearing) in each eye enables the shock to pivot smoothly when the suspension is active.

Are all rear shock eyelets the same size?

Can you drive with a broken rear shock?

Failed or broken shock absorber: A car with one or more of its shock absorbers out of commission will bounce quite a bit and may roll, squat, or dive excessively. Never drive a car with a broken shock absorber at highway speeds and avoid sudden turns or stops; in the long run, a broken shock will need to be replaced.

How are rear shocks measured on a mountain bike?

It is important to understand that your rear shock size on your full suspension mountain bike is not measured by the amount of rear wheel travel, but by the eye-to-eye length, and the stroke length. Eye-to-eye length is the distance between the two mounting points on the shock, or the rear shock mounts on the frame.

Which is harder to buy front or rear shocks?

Rear shocks can be a little more difficult to purchase for your bike than front suspension. This is because many manufacturers use different length shocks. Make sure to know your eye-to-eye measurement of the shock your bike uses and the size of the hardware. Some websites, like Cane Creek’s, have tools to help find these measurements.

Can you tell the length of a car shock?

Shocks aren’t universal in length or fitment. Lifted trucks have longer shocks than factory height trucks. This isn’t such an issue figuring out strut or shock lengths on passenger car vehicles, 99% of the time its going to be factory length parts.

How big of an eyelet do you need for a rear shock?

Industry standard shock mounting eyelet diameter is 15mm. You will use the proprietary mounting hardware that came with your bike’s frame on a 15mm open end eye mount. When upgrading or swapping your shock, you do not need any additional mounting hardware for the 15mm open end eye side, simply swap the proprietary hardware over to the new shock.