Race-Proven 2.5-Inch Coilover Performance with a Hose-Mounted Remote Reservoir
The King Shocks PR2508-COHR is a 2.5-inch Performance Racing series coilover shock absorber featuring an 8-inch stroke and a hose-mounted remote reservoir. Sold as a single unit without springs, the PR2508-COHR is engineered for off-road racers, pre-runner builders, and hardcore enthusiasts who demand consistent, fade-free damping under the most punishing conditions. Built by hand in the USA from aircraft-grade billet aluminum, every King Shocks PR2508-COHR is assembled and valved to exacting tolerances for long-term reliability on trails, desert terrain, and competition courses.
Key Features
- 2.5-inch body diameter for maximum oil capacity and heat dissipation
- 8-inch stroke for substantial suspension travel in off-road and pre-runner applications
- Hose-mounted remote reservoir allows flexible mounting away from the main body
- High-flow aluminum piston delivers precise, consistent damping at all speeds
- 7/8-inch piston rod machined from 1040-1060 high-carbon steel for strength and durability
- COM-10T spherical bearing provides articulation and durability under load
- Urethane wiper seal and Buna main seal for long service life and leak resistance
- Cadmium-plated finish protects against corrosion in harsh environments
- Single-rate spring compatible design using 3.0-inch ID springs (sold separately)
- Disk-swappable valving allows tuning without disassembly for custom applications
- Collapsed length 16.0 inches, extended length 24.0 inches
- Mounting hardware: 1/2-inch x 1.50-inch bushing ends
- Hand-built in the USA
Specifications
| Detail |
Value |
| Part Number |
PR2508-COHR |
| SKU |
KINPR2508-COHR |
| Brand |
King Shocks |
| Series |
Performance Racing (PR) |
| Body Diameter |
2.5 inches |
| Stroke / Travel |
8 inches |
| Piston Rod Diameter |
7/8 inch |
| Collapsed Length |
16.0 inches |
| Extended Length |
24.0 inches |
| Reservoir Style |
Hose Remote Reservoir |
| Springs Included |
No (sold separately) |
| Spring ID Compatibility |
3.0 inches |
| Piston |
High-Flow Aluminum |
| Piston Rod Material |
1040-1060 High Carbon Steel |
| Bearing Size |
COM-10T |
| Mounting Size |
1/2 x 1.50 |
| Wiper Seal Material |
Urethane |
| Main Seal Material |
Buna |
| Finish |
Cadmium |
| Weight |
Approx. 30 lbs. |
| Country of Origin |
USA |
| Warranty |
90 days from date of purchase (manufacturing defects) |
| UPC |
N/A |
| Sold As |
Single unit |
What's Included
- 1x King Shocks PR2508-COHR 2.5-inch coilover shock body with 8-inch stroke
- 1x Hose-mounted remote reservoir
- Mounting hardware (1/2-inch x 1.50-inch bushing ends)
- Springs not included
Frequently Asked Questions
What spring rate do I need for the King Shocks?
Spring rate depends on your vehicle weight and intended use. The PR2508-COHR accepts 3.0-inch ID single-rate springs sold separately. Common rates for pre-runner and off-road builds range from 150 to 600 lbs per inch. Consult a suspension shop or King Shocks dealer to choose the right rate for your specific setup.
Is this King Shocks sold as a pair or single unit?
The PR2508-COHR is sold as a single shock absorber. You will need to purchase two units for a front or rear pair application.
What is the difference between the PR2508-COHR and the PR2508-COHR-AI?
The PR2508-COHR is the standard version with a hose remote reservoir and no internal bypass or compression adjuster. The PR2508-COHR-AI adds an Internal Bypass (IBP) and a compression adjuster for more advanced tuning capability and improved low-speed compliance over whoops and rough terrain.
Can I rebuild the King Shocks PR2508-COHR myself?
King Shocks recommends professional rebuilds by an authorized service center. Rebuild intervals vary by use: racers typically rebuild every 1,000 to 5,000 miles, while trail and off-road drivers may go 10,000 to 30,000 miles between rebuilds depending on intensity of use.
What vehicles is the King Shocks PR2508-COHR compatible with?
The PR2508-COHR is a universal shock body designed to be custom-mounted to a wide variety of off-road vehicles, pre-runners, rock crawlers, trophy trucks, and UTVs. Fitment requires fabrication or a vehicle-specific mounting kit. It is not a direct bolt-on replacement for stock shocks on street vehicles.
Does the King Shocks PR2508-COHR include valving or can it be tuned?
Yes. The PR2508-COHR features disk-swappable valving, allowing damping characteristics to be adjusted by swapping shim stacks without complete disassembly. This allows professional tuners to dial in compression and rebound characteristics for specific terrain and vehicle weight.
What is the warranty on the King Shocks PR2508-COHR?
King Shocks warrants the PR2508-COHR to be free from manufacturing defects for 90 days from the date of purchase. The warranty does not cover crash damage, abuse, modifications using non-King components, lack of maintenance, or incorrect specifications on custom orders. All returns require a Return Authorization (RA) number from King Shocks.
What is the collapsed and extended length of the King Shocks PR2508-COHR?
The PR2508-COHR has a collapsed length of 16.0 inches and an extended length of 24.0 inches, providing 8 inches of total stroke. These dimensions are critical for chassis clearance planning and must be verified against your vehicle's suspension geometry during the build process.
Do I need any special tools to install the King Shocks PR2508-COHR?
Installation requires fabrication equipment and suspension knowledge appropriate for custom off-road builds. The shock uses 1/2-inch x 1.50-inch bushing-style mounting ends. Proper installation should be performed by a qualified fabricator or off-road suspension builder familiar with coilover shock systems.
Installation Notes
- Verify collapsed and extended lengths (16.0-inch and 24.0-inch) against your suspension geometry before ordering
- Select an appropriate 3.0-inch ID single-rate spring based on vehicle weight and intended use
- Mount the remote reservoir in a protected location away from direct heat sources and sharp edges
- Use the COM-10T spherical bearing mounting ends with Grade 8 fasteners torqued to manufacturer specification
- Bleed the shock of air after installation by cycling the suspension through full compression and extension several times
- Check all mounting hardware for torque after the first 50 miles of use
- Inspect reservoir hose routing for clearance with all suspension and steering components through the full range of motion before driving
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
