Poly Labs manufactures high-performance mountain bike bump stops for several common shock brands and suspension system OEMs. Together with Fluid Focus, we’ve developed various bump stop designs, available for use on most mountain bike shock systems. Our specialized polyurethane formulations and advanced material R&D, coupled with the applications knowledge and suspension expertise at Fluid Focus, has resulted in the most advanced bump stops on the market. These components protect the rider, shocks, and the bike as a whole.
Bump Stops for Mountain Bike Shock Systems
One component in mountain bike shock systems commonly unnoticed are bump stops. In some instances, manufactures choose to utilize O-Rings instead. However, bump stops provide various protection benefits and mechanical advantages to a shock system. For one, they help with the shock damping.
Secondly, they help to control and absorb the ending stroke of the shock. This prevents the shock from having too harsh of a bottom out. Ultimately, this helps riders ease into the ending stroke of the shock. In the end, mountain bike bump stops help protect riders and their gear, so they don’t feel as though they are “hitting a wall.”
Design Features
- Tapered designs
- Oil & grease resistant
- 100% Made in the USA
- Superior rider protection
- Support for heavier riders
- 35 & 45 durometer options
- Built for air and coil shocks
- Customized designs available
- 4 standard bump stop cavity sizes
- High-performance polyurethane (PU)
- Support of all major mountain bike shock brands and OEMs
Current Available Mountain Bike Bump Stops
Together with Fluid Focus, we currently offer four standard designs of bump stops. Each design (1-4) comes in two standard durometers (35 and 45). These components are compatible with most major shock systems, including:
CAVITY 1
Supports:
- Fox DPS
- Fox 2016-2020 Float X2, DHX2
- Older Fox RP23, CTD
- RockShox Monarch and Monarch Plus
- RockShox Deluxe
- Ohlins TTX Air
- DVO Topaz and Topaz 2
- CaneCreek Inline Air and Coil
- Cane Creek DBair and DBcoil
- Cane Creek Kitsuma Air and Coil
CAVITY 2
Supports:
- Fox 2021 + Float X2 and DHX2
- Ohlins TTX22m
CAVITY 3
Supports:
- Fox DHX (current)
CAVITY 4
Supports:
- RockShox Super Deluxe Coil / Air
- Fox Float X (current)
- Fox DHX, RC2, RC4 (older)
- DVO Jade and Jade X
- Fox DPX2
- Marzocchi Bomber CR
- Fox Float X (older)
Advantages & Benefits of Using Bump Stops in Air & Coil Shocks
There are several advantages and benefits of using bump stops in mountain bike suspension systems, whether air or coil shocks. In the past, bump stops have been used on coil shocks. However, one advantage to using them in air shocks is due to the fact they are taking up volume within the shock’s air can, we’ve seen suspension tuners, such as Fluid Focus, be able to reduce and/or remove some of the volume spacers that riders have been reliant on.
Additionally, for shocks with smaller strokes (i.e. 40-55mm), bump stops give heavier mountain bike riders more support through the entire range of the shocks. By having multiple rate bump stops, suspension tuners are able to fine tune customer’s suspensions better. Also, frame manufacturers have more options based on the kinematics of the frame design, and the stroke of the shock, when ordering their desired shocks from the suspension manufacturer. Or, the shock manufacturers will have options to offer frame manufacturers.
Curious to learn more? Reach out to Poly Labs or Fluid Focus today to discuss your requirements.
