YoYo Wiki

Manufacturer Custom Products
Release date 1999
Shape Butterfly
Color Various
Weight 49 grams
Dimensions Diameter: 50mm
Width: 26mm
Material Aluminum
Bearing size Original: Composite material axle sleeve
Second Release: Size G Custom
2008 onwards: Size A
Response system Original: None
Second Release onwards: Performance Rings

The Reactor by Custom Products is an all-aluminum miniature yo-yo, which was very popular in the late 90's. The butterly-profiled Reactor preceded the Chain Reactor and was originally offered as a fixed axle yo-yo using a replaceable composite-material sleeve on a metal axle (similar to the original 1984 Silver Bullet).

Eric Wolff devised a way to replace the fixed axle sleeve with a ball bearing and response pads made from Rubbermaid no-slip bathtub tread strips and gave this new transaxle design back to Custom to be used in future production.

The Reactor was then re-released as a ball bearing yo-yo and it was quickly followed by the Chain Reactor, which featured a Modified-shape profile like that of the Axl. Eventually, all of Custom's ball bearing models were redesigned to incorporate the Performance Ring response pad system.

From 2008 onwards, the Reactor, along with the other yo-yos in Custom's line-up began to come standard with A-sized bearings.