Rocky Mountain

Growler 40 Mountain Bike

What Our Gearhead® Experts Are Saying:

"The Growler 40 might be one of the most capable trail hardtails I’ve ridden lately. You get a 140mm fork, super grippy 2.6in rubber, and a proper 12-speed Deore drivetrain—all in a simple, durable platform that’s ready to go hard. I loved how planted it felt even on steep descents. It’s a perfect upgrade for riders ready to level up their trail game without going full suspension."

The Rocky Mountain Growler 40 Mountain Bike delivers hardtail simplicity with trail bike confidence. This modern alloy machine is built around a progressive geometry that balances stability at speed with nimbleness in corners. The slack head tube angle and long front center inspire confidence on descents, while the short rear end keeps it playful and responsive.

Built with Rocky Mountain’s 6061 alloy frame, the Growler 40 features a 140mm Suntour Raidon 34 fork up front for plush trail tracking. It rolls on 29-inch WTB ST i30 TCS 2.0 rims wrapped in 2.6-inch trail tires, giving us a wide contact patch and superior rollover. The Shimano Deore 12-speed drivetrain and SunRace 11-51T cassette deliver smooth, wide-range shifting for climbs and descents alike. Paired with reliable Clarks M2 2-piston hydraulic brakes and a Rocky Mountain dropper post, this rig is ready to tackle rowdy terrain.

Perfect for riders seeking a no-nonsense, send-it trail bike that can keep up with their ambition, the Growler 40 shines on technical trails, bike park days, and after-work laps alike.

Heads up - We do our best to keep bike specs and images current, but occasional component changes can happen without warning-and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearheads are always here to help.