Radflo 2.5 Emulsion + Eibach Spring Package • 16" Travel • 2 Shocks + 2 Springs
The Radflo 2.5 Emulsion + Eibach Spring Package combines two 16" travel Radflo emulsion coilover shocks with two 16" Eibach coilover springs for custom off-road suspension systems. Featuring 2.5" shock bodies and heavy-duty 7/8" Nitro Steel shafts, these coilovers provide increased oil volume and damping capacity over smaller 2.0" shocks while maintaining a reservoir-free design for demanding trail use and rock crawling.
Each Radflo coilover features velocity-sensitive valving and adjustable spring hardware for suspension tuning. The package includes two Eibach 3.0" ID coilover springs with selectable rates from 75 to 500 lb/in to match vehicle weight and suspension requirements. Both springs are supplied in the selected rate, providing a single-spring configuration for each shock. The emulsion design eliminates external reservoirs and hoses, while the fully rebuildable and revalvable shocks provide long-term serviceability.
Includes:
- (2) Radflo 2.5 Emulsion Coilover Shocks – 16" Travel
- (2) Eibach Coilover Springs – 16" Length x 3.0" ID
- Coilover Spring Hardware Included with Radflo Shocks
- Universal Spherical Bearings & Mounting Hardware
Spring Rate Selection: Select your desired Eibach spring rate from the available options. Both springs in this package will be supplied in the selected rate.
Shipping & Assembly: This package ships with the Radflo shocks and Eibach springs packaged separately. Springs are not installed on the shocks. Assembly and suspension setup are required.
Availability: Wide Open Design stocks a selection of Radflo shocks and Eibach springs. Some spring rates, custom valving configurations, and special-order components may require additional production time.
Need help selecting spring rates or confirming availability? Call Wide Open Design for suspension setup assistance.
Specifications
Package Specifications
| Package Type | Radflo Emulsion Coilover Shock & Eibach Spring Package |
|---|---|
| Shock Manufacturer | Radflo Suspension Technology |
| Spring Manufacturer | Eibach |
| Shock Quantity | (2) Coilover Shocks |
| Spring Quantity | (2) Coilover Springs |
| Spring Configuration | Single Spring Per Shock |
| Spring Rate Selection | Customer Selected; Both Springs Same Rate |
| Spring Hardware | Coilover Spring Hardware Included |
| Assembly | Shocks & Springs Shipped Unassembled |
| Primary Application | Custom Off-Road Coilover Suspension, Rock Crawlers, Buggies & Trail Vehicles |
Radflo 2.5 Emulsion Coilover Specifications
| Manufacturer | Radflo Suspension Technology |
|---|---|
| Part Number | 6CE-005-00 |
| Shock Type | Emulsion Coilover |
| Shock Body Diameter | 2.5" |
| Shock Travel | 16" |
| Extended Length | 39.76" |
| Compressed Length | 23.78" |
| Shaft Diameter | 7/8" (0.875") |
| Shaft Material | Nitro Steel |
| Reservoir Type | None – Emulsion Design |
| Oil & Gas Configuration | Oil and Nitrogen Charge Contained Within Shock Body |
| Body Material | SSID Alloy Steel Tube |
| Body Caps / Eyelets | CNC-Machined 6061-T6 Aluminum |
| Body Cap Finish | Black Anodized |
| Coilover Hardware | Adjustable Spring Preload Hardware |
| Ride Height Adjustment | Threaded Spring Preload Collar |
| Valving Type | Velocity-Sensitive Deflective Disc |
| Valving Tuning | Consumer or Factory Tunable |
| Suspension Fluid | High-Temperature Foam-Resistant Suspension Fluid |
| Pressurization | Nitrogen Gas |
| Mounting | Universal Spherical Bearings & Hardware |
| Serviceability | Fully Rebuildable & Revalvable |
Shock Dimensions: Published extended and compressed measurements are nominal reference dimensions. Verify mounting dimensions and available suspension clearance before installation.
Eibach Coilover Spring Specifications
| Manufacturer | Eibach |
|---|---|
| Spring Series | 1600.300 |
| Spring Type | Linear-Rate Coilover Spring |
| Free Length | 16" |
| Inside Diameter | 3.0" |
| Available Spring Rates | 75–500 lb/in |
| Available Rate Options | 13 |
| Spring Rate Selection | Customer Selected |
| Spring Quantity | (2) Springs |
| Spring Rate Matching | Both Springs Supplied in Selected Rate |
| Spring Material | High-Tensile Chrome Silicon Alloy Spring Steel |
| Manufacturing | Shot Peened & Pre-Set |
Available Eibach Spring Rates
| Spring Rate | Eibach Part Number |
|---|---|
| 75 lb/in | 1600.300.0075S |
| 100 lb/in | 1600.300.0100S |
| 125 lb/in | 1600.300.0125S |
| 150 lb/in | 1600.300.0150S |
| 175 lb/in | 1600.300.0175S |
| 200 lb/in | 1600.300.0200S |
| 225 lb/in | 1600.300.0225S |
| 250 lb/in | 1600.300.0250S |
| 300 lb/in | 1600.300.0300S |
| 350 lb/in | 1600.300.0350S |
| 400 lb/in | 1600.300.0400S |
| 450 lb/in | 1600.300.0450S |
| 500 lb/in | 1600.300.0500S |
Spring Selection Note: The selected spring rate applies to both springs in this package. Each coilover receives one 16" Eibach spring. Additional springs and compatible hardware are required for a complete dual-rate configuration.
Fitment
Universal Fitment for Custom Off-Road Suspension Systems
This package is intended for custom front or rear coilover suspension applications requiring 16" travel Radflo 2.5 emulsion shocks and compatible 3.0" ID Eibach springs.
Common Applications:
- Long-Travel Rock Crawlers & Rock Bouncers
- Custom Tube-Chassis Buggies
- Jeep Suspension Builds
- Recreational Off-Road Trucks
- Linked Front & Rear Suspension Systems
- Custom Long-Travel Suspension Builds
Fitment & Installation Notes:
- Universal coilover package requiring custom suspension mounting and setup.
- Includes two 16" travel shocks and two 16" long, 3.0" ID Eibach springs.
- Both springs are supplied in the customer-selected spring rate.
- Verify 39.76" extended length, 23.78" compressed length, mounting dimensions, and chassis clearance before ordering.
- Select spring rate based on vehicle sprung weight, shock angle, suspension motion ratio, and intended ride height.
- Confirm spring preload, available compression, and spring clearance throughout suspension travel.
- Cycle the suspension to verify chassis, tire, axle, driveshaft, and suspension link clearance.
- Proper bump stop placement is required to prevent shocks from becoming the suspension's compression limit.
- Custom shock tabs, mounting brackets, and chassis fabrication may be required.
- Shocks and springs ship unassembled and require installation and suspension setup.
FAQ
What is included in this Radflo and Eibach coilover package?
The package includes two Radflo 2.5 emulsion coilover shocks with 16" travel, two Eibach 16" x 3.0" ID coilover springs in the selected rate, coilover spring hardware, spherical bearings, and mounting hardware.
How do I select my Eibach spring rate?
Select your spring rate from the available options. Both springs in the package will be supplied in the same selected rate. Available spring rates range from 75 to 500 lb/in.
What is the difference between an emulsion and remote reservoir coilover?
An emulsion coilover contains its oil and nitrogen charge within the shock body, eliminating the external reservoir and hose. Remote reservoir shocks provide additional fluid and gas capacity and are often preferred for applications with more sustained or repeated high-speed suspension cycling.
Are these single-rate or dual-rate coilovers?
This package includes one Eibach spring per Radflo shock, creating a single-spring configuration. A complete dual-rate spring setup requires two springs per shock and compatible dual-rate hardware.
Do the shocks and springs arrive assembled?
No. The Radflo shocks and Eibach springs are packaged separately. Springs are not installed on the shocks, and assembly and suspension setup are required.
Why choose a 2.5" coilover instead of a 2.0" coilover?
The larger 2.5" shock body provides increased oil volume and damping capacity compared with a 2.0" coilover. This can be beneficial for heavier off-road vehicles and suspension systems subjected to greater loads.
How do I know if 16" travel is correct for my suspension?
Shock travel must match the suspension's measured compression and droop requirements. The Radflo 16" emulsion coilover has a published extended length of 39.76" and compressed length of 23.78". Verify mounting geometry and available clearance before ordering.
Can I adjust ride height and spring preload?
Yes. Radflo coilovers feature adjustable spring preload hardware, allowing builders to fine-tune ride height and preload within the limits of the suspension design and selected spring package.
Can the Radflo emulsion shocks be rebuilt or revalved?
Yes. Radflo 2.5 emulsion coilovers are rebuildable and revalvable, allowing the damping setup to be serviced or adjusted for changes in vehicle weight, suspension geometry, and intended use.
How do I calculate the correct coilover spring rate?
Spring rate selection depends on sprung vehicle weight, shock angle, suspension motion ratio, and desired ride height. Watch our spring rate calculation guide for help understanding coilover spring selection.
