When to Use Your Rear Shock Climb Switch
Short answer: use your rear shock’s firmer compression setting on smooth, sustained climbs and pavement. On roots, rocks, rough ground, and most descents, leave the suspension more active. Your shock’s owner manual is the final word because lever positions and tuning vary by model.
The simple version is: smooth climb, firmer setting. Rough trail, more open setting.
That is not a rule to blindly apply to every shock. Some shocks have two positions, some have three, and different tunes can behave differently. But it is a useful starting point for riders who have a compression lever and are not sure when to use it.
Quick takeaways
- Use a firmer setting as a starting point for smooth climbs and pavement.
- Keep more suspension active on rough terrain where traction and control matter.
- If your shock has a middle position, it can be useful on undulating terrain.
- Check your shock maker’s manual before treating any setting as universal.
What the climb switch actually does
Many rear shocks use a compression-position lever to change how much low-speed compression support the shock has. That can change how the bike feels under steady pedaling, body movement, and terrain.
The exact labels and behavior vary by shock. FOX’s documented three-position Float guidance uses Open for rough descending, Medium for undulating terrain, and Firm for smooth climbing. Its documented two-position Float X guidance describes Open and Firm, with Firm providing a very firm low-speed-compression setting for climbing and sprinting.
That is why “climb switch” is a useful nickname, but it is not a complete setup instruction. Start with the manufacturer’s guidance for your exact shock, then adjust for the terrain and your bike’s setup.
When a firmer setting can help
A firmer setting is usually most useful when the surface is smooth enough that you do not need much suspension movement for traction or control.
- Fire roads, logging roads, and gravel climbs. Smooth, seated climbing is the classic use case for a firmer setting.
- Pavement. If you are riding to the trailhead, a firmer setting can add support on the smoothest surface you will encounter.
- Smooth, sustained climbs. On a long climb without many roots or ledges, extra support can make the bike feel more settled under pedaling.
- Smooth standing efforts. If the ground is smooth and you are putting down a hard effort, a firmer setting may feel more supportive.
The point is not to chase a magic efficiency setting. It is to match the shock’s support to a surface that is smooth enough to use it.
When to leave the suspension more open
On rough terrain, the rear wheel needs to move to follow the ground. A setting that feels helpful on a fire road can feel harsh or reduce traction when the trail gets rough.
- Technical climbs. On roots, rocks, and ledges, start with more active suspension so the rear tire can keep following the terrain.
- Rough or fast descents. Start open unless your shock maker’s guidance and your own setup point somewhere else.
- Rolling, punchy trails. If the terrain changes every few seconds, it is often simpler to leave the shock in its more active setting instead of constantly chasing the lever.
If your shock has a Medium position, it can be a useful middle ground on undulating trails. FOX specifically describes that use for its documented three-position systems.
The quick reference
| Terrain | Starting point | Why |
|---|---|---|
| Fire road / smooth gravel climb | Firm | Smooth surface; added support can make sense. |
| Pavement | Firm | Little terrain input requires active rear suspension. |
| Smooth singletrack climb | Firm or Medium | Start with support, then back it off if traction suffers. |
| Technical climb with roots or rocks | Open or Medium | More active suspension can help the rear tire follow rough terrain. |
| Rolling / punchy singletrack | Open or Medium | Frequent terrain changes may not be worth constant lever changes. |
| Rough descent | Open | Start with the suspension active; follow your shock maker’s setup guidance. |
The mistake I make too
A familiar one: I set the shock firmer at the bottom of a smooth climb, ride to the top, drop into the next descent—and realize later that I never opened it back up.
My personal reminder is simple: when the terrain changes, check the seatpost and shock setting together. It is not a universal routine, but it helps me remember the settings I changed for the climb.
Why the lever still matters
A lot of riders leave a compression lever alone, even when the shock has settings worth using. The stock control can be small, tucked near the shock body, and easy to ignore.
That is the problem that started Saurus. Tune Lever is a family of model-specific replacement levers for different rear-shock control interfaces. Each Tune Lever model is designed around a particular OEM lever/interface; a model name, shock family name, or visual similarity is not enough to confirm fitment.
The goal is the same across the family: make the correct control easier to find by feel when it is safe to make an adjustment. The details—compatible shock configurations, hardware, tools, installation process, and product-specific specifications—depend on the exact Tune Lever model.
Before ordering, identify your shock and stock lever, then check the compatibility information on the relevant model page. Saurus is adding model-specific options over time, so use the current collection and product-page fitment guidance rather than assuming one lever fits another interface.
See current Tune Lever models and fitment information
Questions about your specific shock or setup? Email me at hello@ridesaurus.com. I answer everything myself.
— Kale, Founder · Saurus · Billings, MT