# RB20/25/26/KA24 Upgrade Flywheel

**URL:** <https://forums.speedlife.net/t/rb20-25-26-ka24-upgrade-flywheel/146619>\
**Category:** Classifieds\
**Created:** [May 2, 2007, 11:07pm UTC](https://forums.speedlife.net/t/rb20-25-26-ka24-upgrade-flywheel/146619 "2007-05-02T23:07:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Nis240](https://avatars.discourse-cdn.com/v4/letter/n/a9a28c/32.png) [@Nis240](https://forums.speedlife.net/u/Nis240)\
**Post date:** [May 2, 2007, 11:07pm UTC](https://forums.speedlife.net/t/rb20-25-26-ka24-upgrade-flywheel/146619/1 "2007-05-02T23:07:15Z")

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I have a RB20 flywheel that can also be used with a RB25 or 26 and can be used on a KA24 with either a RB20/25 clutch or with a 350Z clutch.

KA24 - 220mm Contact area  
RB20/25/26 - 240 mm Contact area  
350Z- 250 mm contact area

Bigger surface to grab onto means a stronger clutch that last longer and doesnt heat up like the smaller KA24 clutch.

$80