The Top Fuel 8 Gen 4 is an agile aluminum trail bike with an outstanding balance of fast climbing efficiency and high-level descending prowess. With 130mm of front and 120mm of rear travel, it’s versatile enough to easily handle rocks and roots and efficiently tackle climbs. Built on a lightweight Alpha Platinum Aluminum frame, which keeps the bike’s price affordable, it comes with performance upgrades where they matter most – such as the Shimano XT/SLX 12-speed drivetrain and the FOX Rhythm 34 fork. Make it your top fuel Opt for lightweight components and a 120mm fork for a nimble, feather-light Top Fuel, or equip it with a 140mm travel fork and a longer-travel 130mm rear shock for an even more versatile trail bike. With clearance for a long-travel dropper post and the option for a mullet setup (29″ front, 27.5″ rear), the Top Fuel can be transformed into a playful trail companion. Four-way adjustable Mino Link Easily adjust the suspension and geometry to your riding style and terrain. Rotate the four-way adjustable Mino Link to ride with more or less progressive suspension and change your geometry to a slacker head tube and lower bottom bracket or a steeper head tube and higher bottom bracket. New internal storage option with new BITS pockets Thanks to new integrated frame pockets, you can leave your backpack at home without having to forgo the essentials. Active Braking Pivot Active Braking Pivot allows our engineers to fine-tune how the suspension reacts independently to acceleration and braking forces. This gives you more confidence in critical situations. A better method of aluminum production In 2024, we began phasing out emissions-intensive aluminum from our production and replacing it with low-emission aluminum produced using renewable energy. By October 2025, nearly all of our aluminum bicycles – including this model – had been converted, resulting in a significant reduction in our carbon footprint.