1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 — Complete Product Overview

The 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 is an OEM replacement rear shock designed specifically for the 1983 Honda CR250R motocross bike. Renowned for its performance and durability, this Showa monoschock provides the precise damping and handling characteristics that competitive riders demand. Whether restoring a vintage CR250R or upgrading its suspension, this rear shock remains a top choice for enthusiasts and racers alike.

Key Features and Specifications

The 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 combines classic Honda engineering with Showa’s industry-leading suspension technology.

Specifications:

Type: Mono-shock rear suspension
Manufacturer: Showa
OEM Part Number: 52400-KA4-681
Designed for: 1983 Honda CR250R
Travel: ~300 mm (depending on stock configuration)
Spring Preload: Adjustable
Damping: Rebound and compression adjustable
Material: Steel body with durable spring and seals
Weight: Approximately 4–5 kg

This shock absorber restores the original suspension geometry and ride characteristics of the 1983 83 CR250R, offering improved stability and control over rough motocross terrain.

Design and Performance

The 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 was engineered to provide consistent damping performance while enduring the rigors of motocross racing.

Design Features:

Showa mono-shock design for centralized mass and improved handling
Adjustable rebound and compression for tuning to rider weight and track conditions
Durable spring with corrosion-resistant coating
OEM-spec dimensions for perfect fitment on the 1983 CR250R

Performance-wise, this shock enhances traction, absorbs jumps effectively, and maintains stability during aggressive cornering, giving riders confidence on both vintage and restored CR250R motorcycles.

Installation and Maintenance

Installing the 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 is straightforward for anyone familiar with CR250R maintenance.

Installation Tips:

Remove the old rear shock and inspect mounting points for wear
Apply light grease to pivot bolts and bushings
Torque all mounting hardware to Honda specifications
Adjust spring preload and damping settings for rider weight and track conditions

Routine maintenance includes:

Checking for oil leaks and spring integrity
Cleaning seals and pivots
Lubricating bushings to prevent corrosion
Inspecting after extended racing or off-road use

Proper maintenance ensures the 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 continues to perform like new, preserving both ride quality and longevity.

Comparison with Related Products

When evaluating rear suspension options for vintage 1983 CR250R bikes, the 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 stands out for its OEM authenticity and performance.

Vs. aftermarket repro shocks:

OEM Showa shock provides original handling and geometry
Aftermarket shocks may offer modern damping but can compromise vintage ride feel

Vs. later Honda CR250R Showa shocks:

Later models have updated damping technology
The 1983 version preserves period-correct suspension performance

Vs. KYB or other aftermarket vintage replacements:

Showa shocks maintain exact fitment for 1983 CR250R
Reliability and brand recognition make Showa OEM preferable for collectors and racers

Overall, the 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 balances authenticity, performance, and durability better than most alternatives.

Ideal Use Case

This rear shock is ideal for:

Restoring a 1983 Honda CR250R to stock condition
Vintage motocross racing
Riders seeking an OEM-quality suspension solution
Collectors preserving original components

Its adjustable damping allows tuning for lightweight riders or those seeking a stiffer, more aggressive setup.

Pricing and Market Availability

OEM Price (new, depending on supplier): $250–$400 USD
Used / Vintage Market: $150–$300 USD, condition dependent

The 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 maintains strong demand due to scarcity of vintage replacement parts and high resale value among collectors.

Conclusion

For owners or restorers of the 1983 Honda CR250R, the 1983 83 CR250R SHOWA REAR SUSPENSION SHOCK MONOSHOCK ABSORBER 52400-KA4-681 is an essential component that preserves original handling, enhances ride quality, and ensures reliable performance. Its OEM construction, adjustable damping, and durable design make it one of the best rear suspension solutions for this classic motocross bike.