2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 – Complete Review, Details & Comparisons

The 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 is a genuine OEM rear suspension component designed to restore or enhance the rear damping system on Kawasaki KX250F motocross bikes. This rear shock strut is essential for riders seeking consistent performance, reliable damping, and durable handling across rough terrain. In this detailed guide, we explain specifications, fitment information, performance benefits, installation considerations, and comparisons with related rear shocks.

---

What Is the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670?

The 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 is the original rear shock assembly supplied with the 2021 Kawasaki KX250F motocross bike. As a factory OEM part, it includes the internal shock damper, spring, bearings, and all necessary components to support the rear end of the motorcycle. It plays a crucial role in absorbing impacts, controlling rebound, and maintaining traction on demanding off‑road surfaces. The proper part number for the 2021 model is 45014‑0670 according to Kawasaki parts documentation.

---

Key Features & Specifications

OEM Quality Construction

The 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 is made to the exact factory specifications used by Kawasaki engineers. This ensures durability and performance consistency over aftermarket replacements.

Spring & Damping Setup

This rear shock assembly comes with a pre‑installed spring calibrated for stock Kawasaki motocross performance. It is part of the rear suspension system that manages compression and rebound dynamics under load and terrain variation.

Precision Fitment

The 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 fits directly into the 2021 KX250F chassis and suspension linkage. It is designed for quick bolt‑on replacement without modification.

Durability & Racing Readiness

Because this shock strut comes from the factory, it is built to withstand frequent intense motocross use. Riders taking their bikes to practice or competition will see improved feedback and reliability compared with worn‑out or generic shocks.

---

Performance & Riding Benefits

Improved Rear Traction

The rear shock assembly helps maintain tire contact on rough trails or motocross tracks. The damping provided by the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 is tuned to complement the bike’s front fork setup, providing balanced performance.

Consistent Damping Over Time

Because this is an OEM component, the 45014‑0670 shock delivers consistent compression and rebound characteristics over its lifespan. This translates into predictable handling through whoops, jumps, and hard landings.

Serviceability

OEM shocks like the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 can be serviced by suspension specialists. Internal seals, nitrogen charge, and oil levels can be refreshed to extend usable life.

---

Fitment & Installation Notes

Installing the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 usually requires basic mechanical tools and proper torque specs for linkage bolts. Always inspect linkage bearings and swingarm pivots during installation to ensure they spin freely. Replacing a worn shock without addressing linkage wear can reduce the effectiveness of the new strut.

---

Comparing With Related Rear Shocks

KYB Aftermarket Rear Shocks

Aftermarket options such as custom‑built KYB rear shocks for KX250F models offer external adjustability like compression and rebound clickers, and sometimes specialized coatings (e.g., Kashima). These can provide a custom ride feel and fine‑tuning for different riding styles — features not available on the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 stock unit.

Older OEM Rear Shock Variants

Previous Kawasaki rear shocks (e.g., earlier part numbers like 45014‑0460) use similar designs but may differ in spring rate or internal valving. Upgrading to the 45014‑0670 model can provide more up‑to‑date damping characteristics and better compatibility with modern riding conditions.

Aftermarket High‑Performance Shocks

Some high‑end aftermarket shocks (e.g., Works Performance or factory race series) offer adjustable high‑ and low‑speed compression settings alongside rebound adjustments. These provide extra tunability over the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670, but at a significantly higher cost and complexity.

---

Pros & Cons – Objective Summary

Pros

• OEM fit and finish ensure reliable compatibility

• Designed for stock Kawasaki suspension tuning and balance

• Durable construction suited for motocross environments

• Can be serviced by professional suspension techs

Cons

• Limited external adjustability compared to premium aftermarket shocks

• May require service sooner under extreme racing conditions

---

Who Should Choose the 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670?

This rear shock is ideal for riders who:

• Want to restore factory suspension performance

• Ride Kawasaki KX250F motocross bikes frequently

• Prefer OEM reliability over aftermarket customization

• Need a direct replacement part without modifications

---

Final Verdict

The 2021 Kawasaki KX250F KX 250F Kx250f Rear Shock Absorber Spring Strut 45014‑0670 stands out as a genuine, dependable rear suspension component for Kawasaki KX250F motocross bikes. Whether replacing a worn shock or preparing your bike for track days, this OEM part balances durability and performance in a way that aftermarket alternatives may not match. Its factory‑calibrated design works seamlessly with Kawasaki’s suspension system for consistent handling and control.