[Parts Review] It Cools Right Before Your Eyes. Perfect Heat Management for Air-Cooled Z with “Speed Shop Ito” Oil Cooler

This Z1R (D1) tends to run really hot.
Even riding through these country roads in freezing winter, “A hundred degrees?”
The owner, who lives in Tokyo, said it gets even hotter there.

If you want something simple and clean, when it comes to oil coolers, “Ito-san, the big name from Gifu,”
the temperature drops right before your eyes—pretty surprising…
Making a video of the oil temperature dropping could be fun.

Today’s Recommended Item

Brand: Speed Shop Ito

Item: Oil Cooler Kit (※Add details on number of stages and hose routing if applicable)

Purpose: Reliable heat management for a Z1-R (air-cooled engine) tuned with WEB CAM and similar upgrades.

Features:

  • Exceptional cooling efficiency of the core.
  • Beautiful fittings thanks to custom design.

Results: You can feel the oil temperature dropping noticeably as soon as the riding wind hits the core. Now traffic jams and hot summers are no problem.

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¥53,856 (2026/09/21 11:35時点 | 楽天市場調べ)

Oil cooler too? Try to maximize wind resistance

Positioning it to catch the wind efficiently (rather than at an angle) cools it better.
Vertical is better than angled if possible.

Adjust the position with clearance for steering and contact points for best results.

The lower union uses O-ring sealing.
It tends to spin together, so I apply a light thread locker to the union.

It’s unlikely you’ll remove it anyway, plus it adds safety.

The oil temperature drops noticeably.

Without much riding, the oil temperature drops noticeably.
Even on a day that’s not particularly cold, it drops this much—really helpful.

Simple yet highly efficient—the perfect oil cooler for Z series bikes.

The routing is a bit tight in places, so potential contact points are protected with molding and rubber dampers for safety.

Remove the cam chain tensioner.

The bolts here were surprisingly tight—a bit scary.
I was worried about snapping something on this Z1R (;∀;)

Air Cleaner Box Compatible Z Model
Upper Inner Routing 6-Inch Oil Cooler KIT 6-Inch 10-Stage Black/Black

What I chose this time was
Air Cleaner Box Compatible Z Model Upper Inner Routing 6-Inch Oil Cooler KIT 6-Inch 10-Stage Black/Black

If you’re selecting an oil cooler with an air cleaner box, this is the way to go.
Installation isn’t too difficult either.

Item Review: “Speed Shop Ito” Oil Cooler for Air-Cooled Z.

Item: Oil Cooler Kit by Speed Shop Ito, a renowned specialist for Kawasaki Z series. Reason: Upgrading the camshafts (WEB CAM) increased engine heat. Proper heat management is crucial for an air-cooled engine to prevent damage. Review: The cooling performance is outstanding. You can literally watch the oil temperature drop as soon as you start riding and the wind hits the core. It also features beautiful, high-quality fittings. Highly recommended for any tuned Z.

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