6CR-001-00
The Radflo 2.5 Remote Reservoir Coilover Shock is designed for off-road builds that need more damping capacity, oil volume, and heat control than a smaller 2.0 shock can provide. With a 2.5" shock body, heavy-duty 7/8" shaft, remote reservoir, and dual-rate spring hardware, this coilover is well suited for heavier vehicles, larger tires, long-travel suspension systems, and aggressive terrain where consistent shock performance matters.
Available in 8", 10", 12", 14", 16", and 18" travel lengths, the Radflo 2.5 coilover is fully rebuildable and revalvable for long-term serviceability and suspension tuning. Springs are sold separately so the correct rates can be matched to vehicle weight, suspension geometry, and intended use. Popular configurations are commonly stocked, while custom valving and special-order combinations may require additional lead time.
Includes:
Note: Eibach Coilover Springs are sold separately. Shocks are sold individually.
| Specification | Details |
|---|---|
| Manufacturer | Radflo Suspension Technology |
| Shock Type | Remote Reservoir Coilover |
| Shock Body Diameter | 2.5" |
| Travel Options | 8", 10", 12", 14", 16", or 18" |
| Shaft Diameter | 7/8" (0.875") |
| Application | Front or Rear |
| Body Material | SSID Alloy Steel Tube |
| Body Finish | Clear Cadmium Plating |
| Body Caps / Eyelets | CNC-Machined 6061 Aluminum |
| Cap Finish | Black Anodized |
| Shaft Material | Nitro Steel |
| Shaft Finish | Mirror Polished |
| Rod Guide | CNC-Machined Bronze with PTFE Coating |
| Piston | Radflo Aluminum Freeflo Racing Piston |
| Seal System | Quad-Ring and Lip Seal |
| Valving Type | Velocity-Sensitive Deflective Disc |
| Valving | Consumer or Factory Tunable |
| Shock Oil | Radflo High-Temperature Foam-Resistant Suspension Fluid |
| Pressurization | Nitrogen Gas |
| Nitrogen Charge | 200 PSI |
| Serviceability | Fully Rebuildable and Revalvable |
| Dual-Rate Spring Hardware | Included |
| Coil Springs | Sold Separately |
| Quantity | Sold Individually |
| Application | Typical Use |
|---|---|
| Rock Bouncers | High-impact suspension systems requiring increased damping capacity |
| Ultra4 Race Cars | Competition suspension with repeated high-speed and rock impacts |
| Rock Crawlers | Long-travel articulated suspension systems |
| Prerunners / Off-Road Race Trucks | High-speed terrain and extended suspension cycling |
| Jeep and Heavy Trail Builds | Custom coilover conversions and larger-tire suspension systems |
| Custom Tube Chassis | Front or rear universal coilover installations |
Fitment Notes:
A 2.5" shock body holds more oil and uses a larger piston area than a 2.0 shock, providing greater damping capacity and improved heat management. This makes the larger shock better suited for heavier vehicles, larger tires, longer suspension travel, and more aggressive off-road use.
A remote reservoir increases total fluid and nitrogen volume while moving part of the shock's internal volume outside the main body. This helps manage heat and maintain more consistent damping during repeated suspension cycling and extended off-road use.
Shock travel should be selected from the actual suspension geometry, not tire size or lift height alone. Measure the available compressed and extended mounting lengths while cycling the suspension, then choose a shock that stays within its operating range without bottoming internally or limiting droop.
No. Dual-rate spring hardware is included, but coil springs are sold separately so the correct spring rates and lengths can be matched to the vehicle. Learn how to calculate coilover spring rates.
Yes. These shocks are fully rebuildable and revalvable. Seals, oil, nitrogen charge, and internal valving can be serviced or changed as the vehicle setup and suspension requirements evolve.
