You are looking at "dynatek ignition module DFS3-15R rev-limiter remover" This product features.

• Plug-in replacement module with four programmable advancer curves that provide improved torque and 800% more spark energy for easier starts
• Four programmable timing curves
• 3D advance curves on TPS-equipped bikes
• One programmable rev limit per ignition curve
• Improved throttle response
• Easy to mount
• Programming kit sold separatly
• Improved timing curves with high rev limit
• Removed reverse rev limit
• Overrrides belt indicator for full performance at all times
• Increased spark energy and throttle response
• Easier starting
• Plug-in module replacemnt is easy to mount
• Made in the U.S.A.
• 1 year warranty

This part fits all the models listed below 

• for Suzuki years listed below...
• Quadsport z50 (LTZ50 2x4)...............2006-2025
• Quadsport z90 (LTZ50 2x4)...............2007-2025

INTERNATIONAL BUYERS:  We do not ship any Dyna items to the United Kingdom. For the rest of the world, please be aware that we DO NOT collect any VAT or customs and import fees that may be imposed by your country.  All Import fees and taxes, if any, are the buyer’s responsibility when the item is imported into your country.   Please check your local VAT, Customs and Import Laws for more information about possible fees and taxes that may be associated with your purchase as we do not have the ability to collect and pay any fees or taxes to foreign governments.