Triumph Rear Sprockets Sprocket Size:72 - Stock size for Z125

- Stock size for Z125 is 43 tooth

most ProSeries front sprockets are milled with lightening holes for optimum performance

-All of our drive kits come with x-ring sealed chains that are appropriately rated for the bike for which they are intended

Show your true colors

Triumph Rear Sprockets Sprocket Size:72 - Stock size for Z125All ProSeries Sprockets are Made in the USA from the harder grade 7075 T6 certified aero space industry aluminum for long life and light weight. They are machined to exact specs with tolerances much more stringent than other aluminum sprockets and many times tighter than OE sprockets. What this means is that your chain will fit the sprocket better and everything will last longer. Additionally, they are chemically etched to give them a uniform, even