Frequently Asked Questions
Find answers to common questions about our e-bikes, shipping, and policies.
General
What is the Birch Grolar?
The Grolar is Birch’s flagship electric hunting bike, built for rugged terrain, heavy loads, and long-range backcountry rides. It features dual 750W motors, a 1200Wh battery, and a frame designed for real hunting conditions.
Why is it called the Grolar?
It’s named after the hybrid grolar bear — combining the strength of a grizzly with the resilience of a polar bear. The bike is designed to deliver the same blend of power, adaptability, and durability.
Who is Birch?
Birch is a team of hunters, riders, and outdoor enthusiasts who set out to build a true hunting-grade e-bike that can handle real-world demands. Their development timeline includes: • 2022: Concept & research • 2023–2024: Prototyping, testing, and production • 2024: U.S. quality control and first shipments
Performance & Power
What kind of motor does it have?
The Grolar uses dual 750W hub motors (front + rear) for a combined peak output of 1,500W.
How fast does it go?
Top speed ranges from 20–28 mph, depending on mode and conditions.
What is the torque rating?
It delivers 160 Nm of torque through a center-mounted TORG2B torque sensor — significantly stronger than typical hunting e-bikes.
Does it have different ride modes?
Yes — three modes: • Pedaling • Pedal assist • Throttle (half-twist style)
Battery & Range
How big is the battery?
A high-capacity 48V 25Ah (1200Wh) battery.
What is the real-world range?
• Up to 85 miles using pedal assist • Up to 45 miles using throttle only
Build & Components
What is the frame made of?
A durable 6061 aluminum alloy frame built to handle wilderness abuse.
How much weight can it carry?
The Grolar supports a 400 lb payload capacity, ideal for hauling gear, game, or equipment.
What type of suspension does it use?
It features 180mm front inverted air suspension for excellent off-road stability.
What brakes does it use?
180mm dual-piston hydraulic brakes for strong stopping power on steep or uneven terrain.
What tires come with the Grolar?
It includes 26×4” puncture-proof fat tires (CST C1752), designed for mud, snow, sand, and rocky trails.
Controls & Drivetrain
What type of display does it have?
A 3.5” full-color LED display.
What drivetrain does it use?
Shimano 9-speed M4000 gearing.
What class of e-bike is it?
The Grolar is rated as a Class 5 e-bike.
Size & Fit
What is the total weight of the bike?
The full bike weighs 109 lbs with the battery installed. The full bike weighs 109 lbs with the battery installed.
What rider height is recommended?
Optimized for riders 5’1” to 6’5”.