Radflo 2.0 Hydraulic Bump Stops & Short Bump Can Kit – 2" or 3" Travel
The Radflo 2.0 Hydraulic Bump Stops & Short Bump Can Kit gives you the bump stops and weld-on mounting cans needed to add controlled bottom-out protection to a custom off-road suspension. Available with 2" or 3" travel Radflo bump stops, this package is built for rock crawlers, Ultra4 cars, prerunners, tube chassis buggies, and other vehicles that regularly use the full suspension travel.
Radflo hydraulic bump stops work as secondary dampers during the final portion of suspension compression, progressively slowing the axle before it reaches a hard mechanical stop. The included short weld-on bump cans give fabricators a clean mounting solution while allowing bump engagement height and position to be established around the vehicle's actual suspension geometry. Buying the bump stops and cans together also provides a bundled package discount.
Includes:
- (2) Radflo 2.0 Hydraulic Bump Stops
- Choice of 2" or 3" Bump Stop Travel
- (2) Short Weld-On Bump Stop Cans
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Radflo / Wide Open Design |
| Product Type | Hydraulic Bump Stop & Mounting Can Kit |
| Bump Stop Type | Hydraulic Pinch Mount |
| Bump Stop Body Diameter | 2.0" |
| Travel Options | 2" or 3" |
| Rod Shaft Diameter | 1.25" |
| Rod Material | Mirror-Polished Alloy Steel |
| Rod Finish | Chrome Plated |
| Body Material | SSID Alloy Steel Tube |
| Body Finish | Clear Cadmium Plating |
| Body Caps / Eyelets | CNC-Machined 6061 Aluminum |
| Body Cap Finish | Black Anodized |
| Rod Guide | CNC-Machined Bronze with PTFE Coating |
| Piston | Radflo Freeflo® Aluminum Racing Piston |
| Valving | Velocity-Sensitive Deflective Disc |
| Seals | Quad-Ring & Lip Seal Combination |
| Suspension Fluid | Radflo High-Temperature Foam-Resistant Fluid |
| Pressurization | Nitrogen Charged |
| Nitrogen Pressure | 200 PSI |
| Serviceability | Rebuildable & Tunable |
| Bump Can Material | DOM Steel Tubing |
| Bump Can Construction | Precision Laser-Cut, Weld-On |
| Primary Application | Custom Off-Road Suspension Bottom-Out Control |
Fitment
Common Applications:
- Rock crawlers
- Rock bouncers
- Ultra4 and off-road race vehicles
- Prerunners and desert trucks
- Tube chassis buggies
- Custom long-travel suspension systems
Installation Notes:
- Weld-on installation requires fabrication.
- Bump stop position should be established with the suspension cycled through its usable travel.
- Verify bump engagement before the shock, coilover, driveline, steering, or other suspension components reach their mechanical limits.
- Confirm clearance around the bump stop and can throughout suspension travel.
- Select 2" or 3" travel based on the available packaging space and desired engagement range.
FAQ
What does a hydraulic bump stop do?
A hydraulic bump stop acts as a secondary damper near the end of suspension compression. Instead of allowing the suspension to hit a hard stop abruptly, it absorbs energy and progressively slows suspension movement as the vehicle approaches full bump.
Should I choose a 2" or 3" travel bump stop?
The correct travel depends on suspension geometry, available mounting space, and where you want the bump stop to begin controlling compression. Both options require the suspension to be cycled so engagement can be established around the actual vehicle.
How should the bump stops be positioned?
Position the bump stops so they engage before another suspension component reaches its mechanical limit. Cycle the suspension through compression and articulation while checking shock travel, steering, driveline, tire, axle, and chassis clearance before final welding.
Are the Radflo bump stops rebuildable and tunable?
Yes. These Radflo hydraulic bump stops are rebuildable and tunable, allowing the bump stop setup to be serviced and adjusted for the vehicle and application.
Do the mounting cans require welding?
Yes. The included short bump cans are weld-on fabrication components. Their final location should be established only after the suspension has been mocked up and the correct bump engagement point has been confirmed.
