Upgrades for a Sportier Ride: KAWASAKI ZX-4R Custom

• ZX-4R

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Webike's Opinion

Here is a "KAWASAKI ZX-4R" custom by Webike community user "yama". The exhaust system features the BEET NASSERT Evolution Type II Full Titanium Exhaust, which achieves a 44% weight reduction compared to the stock version. From 7,000 rpm onward, you’ll feel the thrilling rush of acceleration and hear an intoxicating sound. To achieve a more direct and responsive braking feel, the GALE SPEED Full Spec Radial Master Cylinder has been installed. The lever ratio can be adjusted in 0.25mm increments, allowing you to fine-tune the lever feel, plus you get to choose the handlebar clamp shape and lever size.

To enhance the sporty riding experience, an ACTIVE Clip-on Handlebar Kit has been added. With a design that narrows the handlebar angle and adds a downward tilt, it encourages a forward-leaning riding posture. The windshield has also been swapped out for an MRA Racing Windshield. The raised central portion of this windshield helps shield up to your helmet when leaning forward, channeling air above your head and minimizing the wind resistance of the bike.

The frame features the BEET Sports Link Plate Kit, which improves rear axle weight distribution by 7% without altering the bike's overall height. This adjustment significantly enhances rear grip and stability, especially when using high-grip tires or during aggressive, sporty rides. For the rearsets, a machined STRIKER Special Footpeg Kit made from high-quality A2017 Duralumin has been equipped, showcasing meticulous craftsmanship. Ball bearings are used in the pivot points of both pedals, ensuring smooth movement and reducing rider fatigue. The main plates are designed with a sturdy thickness for high rigidity, yet strategically hollowed out to achieve optimal weight reduction.

Specifications

Part	Details
Exhaust	BEET NASSERT Evolution Type II Full Titanium Exhaust
Brake	GALE SPEED Full Spec Master Cylinder [VRC Series] Brake Master GOODRIDGE Build-A-Line Front Bolt-On Brake Hose Kit by Model
Handles	ACTIVE Clip-on Handlebar Kit
Frame	BEET Sports Link Plate Kit
Bodyworks	ACTIVE Fender Eliminator Kit MRA Windshield Racing TRICK STAR Sports High Seat
Engine	MotoJP ECU Tuning SUGAMEC Quick Shifter Sensor
Suspension	SHOWA BFRC-lite Rear Shock
Rearsets	STRIKER Special Footpeg Kit