Only as its for sale https://www.averysmotorcycles.co.uk/shop/item/6592/Bazzaz_Z-Bomb, and mentions specifically for US Bikes only
This is from the Bazzaz UK site, doesn't say anything about it being just for US bikes. Z-BOMB Tue, 04/06/2010 - 20:04 | jameshalligan The Z BOMB Timing Retard Calibrator maximizes engine performance of a Honda CBR for up to a 7HP gain over stock. On a Suzuki, it eliminates the top speed limiter and improves throttle response. This is an impressive performance upgrade for the price. The simple plug-in unit installs in minutes with just a screwdriver and a 5mm hex key. Though the Z BOMB integrates perfectly with all ZFiEMS products and other aftermarket tuning units, an EMS is not necessary. | Tags: PRODUCTS, Z-BOMB - Timing Retard Calibrator