Giving Your Bike More Grunt with a 98 Big Bore Kit

Choosing a 98 big bore kit is probably one of the most satisfying upgrades you can do if you're riding an older Twin Cam 88. It's that perfect middle ground where you get a massive boost in personality and power without having to tear the entire engine down to the crankcase. If you've been feeling like your 88-inch motor is struggling a bit on the highway or just lacks that "get up and go" when you twist the throttle, bumping it up to a 98 is usually the answer most riders are looking for. ...

May 5, 2026 · 6 min · Leverett Nourba