Our 140mm/150mm travel Primer trail bike is pure perfection… everywhere. The Primer 275 has all of the DNA of its bigger wheeled sibling, the Primer 29, but this time on nimble 27.5” wheels. You still get trail-flattening speed over any obstacle, both on tough climbs and technical descents, but the smaller wheels make the bike slightly more responsive and agile, and better suited to tighter trails. In short, the Primer is the ultimate all-round performance trail bike, whether you prefer 29” or 27.5” wheels. It could be the only mountain bike you’ll ever need.