Kawasaki Ninja EX400/Ninja 500 Slipper Clutch Design 2018/Current

Spears Racing’s slipper clutch reduces rear wheel chatter on downshifting, allowing better chassis stability under braking and entry to corners, reducing the chances of crashing and allowing the rider to reduce lap times as a result of better grip

Every Spears Racing Slipper Clutches arrive with the Proper Clutch Springs

 

$119.99$1,129.97

Description

The Spears Racing Slipper Clutch for the Kawasaki Ninja 400/Ninja 500 is a high-performance upgrade designed for racing, track, and street riding. Here’s a concise breakdown of its key features, benefits, and components based on the provided information:
Key Features:
  • Material: CNC-machined from EN AW 7075 aerospace aluminum alloy, offering high strength, ductility, toughness, and fatigue resistance.
  • Finish: Hard anodized (Type III) for a harder, denser, and more abrasion-resistant coating, enhancing durability and longevity.
  • Design: Computer-aided design/manufacturing (CAD/CAM) billet slipper clutch, tested and raced globally in WorldSSP300, WorldSBK, BSB, and MotoAmerica.
  • Compatibility: Uses original friction plates, drive plates, and basket (some kits include a billet basket replacement).
Benefits of the Slipper Clutch:
  • Reduced Rear Wheel Chatter: Minimizes wheel hop during downshifting, improving chassis stability under braking and corner entry.
  • Enhanced Cornering: Allows higher corner entry/mid-corner speeds by reducing engine braking, leading to faster lap times and better grip.
  • Engine and Transmission Protection: Reduces mechanical stress from engine back-torque, preventing damage to the engine and gearbox, and minimizes over-revving on downshifts.
  • Improved Rider Confidence: Smoother clutch feel and action reduce the need to focus on clutch operation, allowing riders to concentrate on braking, body posture, and cornering.
  • Reduced Wear: Lowers stress on the transmission and chain, extending their lifespan.
  • Safety: Prevents rear wheel lock-up in case of engine seizure or transmission failure.
  • Versatility: Suitable for racing, track, and street applications.

 

 

Spears-Racing-Kawasaki-Ninja-400/500-Slipper-Install

Kit Components:
  • 1 Spears Racing Slipper Drum
  • 1 Pressure Plate
  • 5 Spring Tops (standard set)
  • 5 Spring Tops (for increased preload/more engine back-torque)
  • 5 M5 Bolts
  • 5 SP20-400 Slipper Clutch Springs
  • 1 Red Loctite
  • 1 Throw Out Bearing (for 2020 models only)
Why It’s Needed:
The slipper clutch mitigates the destabilizing effects of aggressive downshifting by reducing back-torque, which can cause rear wheel chatter or lock-up. This leads to better control, stability, and confidence, particularly in high-performance riding scenarios. It also protects critical components, making it a valuable upgrade for competitive riders and enthusiasts.

 

Clutch Cover Gasket

Additional information

Weight 5 lbs
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