Growler 40 Mountain Bike
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Confident trail control and fast-rolling grip on the Rocky Mountain Growler 40 Mountain Bike
What Our Gearhead® Experts Are Saying:
"Hardtail bikes don’t always scream rowdy, but the Growler 40 totally does. I was really impressed with how much terrain it handled—thanks to the slack front end and burly 2.6in tires. It’s such a simple, fun ripper of a bike, and it still fits a dropper post and modern geo. Honestly, for the price, it’s just pure good times."
We ride the Rocky Mountain Growler 40 Mountain Bike when we want simplicity without compromise. Built around a solid 6061 alloy frame with progressive geometry, this hardtail encourages us to go bigger, corner harder, and take on techier lines with confidence. The 140mm Suntour Raidon fork up front gives us the freedom to charge into the rough stuff, while the 29 x 2.6in tires deliver corner-carving grip and plush rollover on rooty singletrack.
With its Shimano Deore 12-speed drivetrain, wide-range SunRace cassette, and durable WTB wheels, the Growler 40 balances reliability with shredability. Clarks M2 brakes keep our speed in check, and the Rocky Mountain dropper post lets us transition from climb mode to descend mode at a moment's notice. Built to take a beating and deliver maximum fun, the Growler 40 is the modern trail hardtail we keep coming back to.
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.
Details
- Trail-tuned hardtail mountain bike for fast, fun singletrack riding
- 6061 alloy frame with modern geometry is ready for tech trails
- 140mm Suntour Raidon fork smooths out big hits and roots
- Shimano Deore 12-speed drivetrain for wide-range gearing
- Hydraulic Clarks M2 brakes with 180mm rotors boost control
- WTB i30 tubeless-ready rims with 29 x 2.6in grippy trail tires
- Internal dropper post routing with post included
- Designed for all-day fun on aggressive trails and bike park laps
- Item #RMBB04D
- Frame Material
- alloy
- Suspension
- hardtail
- Fork
- Suntour Raidon 34 LOR Air
- Front Travel
- 140mm
- Shifters
- Shimano Deore (12-speed)
- Rear Derailleur
- Shimano Deore (12-speed)
- Crankset
- Rocky Mountain Microdrive
- Chainring Sizes
- 30t
- Cassette
- Sunrace CSMZ800 WA10
- Cassette Range
- 11–51t
- Chain
- Shimano M6100
- Brakeset
- Clarks M2 2-Piston
- Brake Type
- hydraulic disc
- Rotors
- Shimano RT30 (180mm)
- Handlebar
- Rocky Mountain AM
- Handlebar Rise
- 25mm
- Grips
- Rocky Mountain Lock On
- Saddle
- Rocky Mountain 148 Steel
- Seatpost
- Rocky Mountain Toonie Drop
- Wheelset
- WTB ST i30 TCS 2.0
- Front Axle
- 15mm Boost
- Rear Axle
- 148mm Boost
- Tires
- [front] WTB Vigilante TCS Light High Grip Tri-Tec, [rear] WTB Trail Boss G2
- Tire Size
- 29 x 2.6in
- Pedals
- not included
- Activity
- trail, cross-country
- Manufacturer Warranty
- limited
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