Radflo 3.0 Bypass Shock w/ Piggyback Reservoir – 3-Tube, 1” Shaft
7BP-301-00
The Radflo 3.0 3-Tube Bypass Shock with Piggyback Reservoir is built for off-road vehicles that need maximum damping control, strength, and heat capacity in a compact package. With a 3.0" shock body, 1" shaft, three externally adjustable bypass tubes, and an integrated piggyback reservoir, this shock is well suited for rock bouncers, Ultra4 race cars, competition crawlers, long-travel builds, and other high-performance off-road applications.
The larger 3.0" body provides increased oil volume and damping capacity for heavier vehicles, larger tires, higher speeds, and repeated hard impacts. The piggyback reservoir adds fluid capacity and heat management without external reservoir hoses, helping simplify installation while retaining the tuning control and durability expected from a high-performance bypass shock.
Includes:
- (1) Radflo 3.0 3-Tube Bypass Shock
- Integrated Piggyback Reservoir
- Universal Spherical Bearings
- Mounting Hardware
Availability Note: As the #1 stocking warehouse for Radflo Performance Shocks, we maintain a large inventory of Radflo shocks and suspension components for immediate shipment. Custom-valved and special-order configurations may require 4–6 weeks for production and delivery.
Need parts quickly or have ordering questions? Call us for current inventory availability and help selecting the correct shock configuration for your build.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Radflo |
| Product Type | 3-Tube External Bypass Shock with Piggyback Reservoir |
| Shock Body Diameter | 3.0" |
| Travel Options | 10", 12", 14" or 16" |
| Shaft Diameter | 1.00" |
| Rod Material | Nitro Steel® |
| Rod Finish | Mirror Polished |
| Body Material | SSID Alloy Steel Tube |
| Body Finish | Clear Cadmium Plating |
| Body Caps / Eyelets | CNC-Machined 6061 Aluminum |
| Body Cap Finish | Black Anodized |
| Bypass Tubes | 3 |
| Reservoir Type | Piggyback |
| Bearing Size | 5/8" (0.625") |
| Mounting | Universal Spherical Bearings & Hardware |
| Rod Guide | CNC-Machined Bronze with PTFE Coating |
| Piston | Radflo Aluminum Freeflo® Racing Piston |
| Seal System | Quad-Ring® & Lip Seal Combination |
| Valving Type | Velocity-Sensitive Deflective Disc |
| Valving Adjustment | External Bypass Adjustment |
| Valving Tuning | Consumer or Factory Tunable |
| Oil | Radflo High-Temp Foam-Resistant Suspension Fluid |
| Pressurization | Nitrogen Gas |
| Nitrogen Pressure | Starting at 200 PSI, Application Dependent |
| Serviceability | Fully Rebuildable & Serviceable |
| Sold | Individually |
Fitment
Universal shock for custom front or rear off-road suspension applications.
Common Applications:
- Rock Bouncers
- Ultra4 Race Cars
- Competition Rock Crawlers
- High-Horsepower Trail Rigs
- Long-Travel Suspension Systems
- Custom Tube Chassis Vehicles
- Unlimited-Class Off-Road Vehicles
- High-Performance Off-Road Builds
Fitment Notes:
- Verify shock travel, compressed length, extended length, and mounting clearance before ordering.
- Piggyback reservoir clearance must be checked through the full suspension cycle.
- Final valving and bypass adjustment should be matched to vehicle weight, suspension geometry, terrain, and intended driving style.
- Confirm tire, chassis, link, spring, steering, and driveline clearance before final shock placement.
- Professional suspension setup and tuning are recommended for competition and high-performance applications.
FAQ
What is the difference between a Radflo 3.0 bypass shock and a 2.5 bypass shock?
The 3.0" shock body provides greater oil volume and damping capacity, while the 1" shaft adds strength for higher suspension loads. This makes the 3.0 better suited for heavier vehicles, larger tires, higher speeds, repeated impacts, and more aggressive off-road use.
What does a 3-tube bypass shock do?
A 3-tube bypass shock allows damping to be adjusted through different zones of the suspension travel. This gives the builder more control over ride quality, chassis movement, traction, and bottom-out resistance than a conventional smooth-body shock.
Why choose a piggyback reservoir instead of a remote reservoir?
A piggyback reservoir mounts directly to the shock body, eliminating external hoses and separate reservoir mounts. It still increases oil capacity and helps control heat, but requires enough chassis clearance around the shock for the integrated reservoir.
What vehicles are best suited for a Radflo 3.0 piggyback bypass shock?
These shocks are commonly used on rock bouncers, Ultra4 race cars, competition crawlers, long-travel vehicles, high-horsepower trail rigs, and custom off-road builds where maximum suspension control and compact reservoir packaging are priorities.
Are Radflo 3.0 bypass shocks rebuildable and tunable?
Yes. Radflo 3.0 bypass shocks are fully rebuildable and serviceable. The external bypass tubes provide damping adjustment, while internal valving can also be tuned to better match vehicle weight, suspension geometry, and intended use.
