Birch Grolar Load-Bearing Review: Real-World Hauling Power Tested

Most hunting eBikes promise power, torque, and hauling capability, but the Birch Grolar actually delivers. Built with a robust AWD motor system, an integrated front suspension, and a reinforced rack-and-frame setup, this bike is designed to carry up to 400 lbs—encompassing the rider and cargo. That’s not unusual for a premium hunting eBike. What is unusual is how much real-world testing has shown the Grolar can go beyond its published limits.

If you’re the kind of rider who needs to haul game, camping gear, weapons, feed, tools, or a loaded trailer deep into rugged terrain, load-bearing performance isn’t just a spec—it’s the make-or-break factor. So we pushed the Grolar harder than typical field use, checked its balance under uneven loads, and even stress-tested its towing capabilities under extreme conditions. Keep on reading to find out how it stood up to the test. 

Rated for 400 lbs… but Capable of Much More

The Grolar is rated for 400 lbs of total carrying capacity, a respectable figure that places it comfortably among purpose-built backcountry eBikes. But numbers on a spec sheet always leave one lingering question: How much can it actually handle?

To answer that, we put the Grolar through a stress test that went far beyond typical use. We tested the bike’s capacity by hauling three full-sized ATVs, totaling approximately 1,800 pounds (including riders). While we don’t recommend you tow almost two tons regularly, as this will deplete your battery, this test just goes to show what the Grolar is capable of. 

Clearly, no hunter or outdoorsman is dragging that kind of load up a ridge. But the point is clear: the motor system, frame welds, torque distribution, and rear-rack mounting points aren’t anywhere near their breaking point under regular use. When a bike can tow several ATVs, it’s safe to trust it with the things you actually take into the woods.

Field Testing: Hauling Game, Feed, and Daily Gear

For a more practical evaluation, we loaded the Grolar with something every hunter knows well: feed bags.

We mounted:

• Two bags on the rear rack
• One bag on the front rack

Each bag weighed around 40–50 lbs. Combined, this created a substantial but realistic load scenario—comparable to a quartered deer, a cooler, or several days’ worth of hunting gear.

Rear Rack Performance:

The rear rack handled the weight exceptionally well. Birch designed it to be the central cargo zone, and that engineering shows. The bike maintained traction, didn’t flex unnervingly, and distributed weight predictably.

Front Rack Performance:

The front rack held the weight but made steering noticeably more unstable. Any front-mounted cargo, especially heavy bags, raised the bike’s center of gravity and reduced precision handling. On bumpy ground, the steering became sluggish and required more active correction.

Our Recommendation:

Use the front rack sparingly, as a mount for:

• Weapons
• Smaller gear
• Camera equipment
• Lightweight packs

Keep the rear rack for anything heavy:

• Feed
• Game quarters
• Water jugs
• Tools
• Coolers

This setup keeps steering manageable while maximizing load stability. The Grolar can handle uneven loads, but like any bike, balance matters.

Trailers and Sleds: The Smart Way to Haul More

One major advantage of the Grolar’s AWD motor system is its ability to pull trailers and sleds without getting bogging down. If you routinely transport:

• Tree stands
• Firewood
• Big game
• Camping setups
• Extra fuel or water

…then a trailer is worth the investment.

Trailer Handling Tips

During our testing, the Grolar had zero issues pulling a well-balanced trailer. Problems arise only when:

• Weight is unevenly distributed
• Cargo shifts during travel
• The terrain is sharply angled

On rough trails, a poorly balanced trailer can tip, whip to one side, or cause the bike to become unbalanced. This is not unique to Birch—any eBike with a trailer will behave this way. But the Grolar’s torque makes the issue more noticeable because you can pull heavier loads, meaning mistakes can get more expensive.

Key Advice

• Keep weight low and centered
• Double-check that your trailer hitch is secure
• Avoid stacking items higher than the trailer walls
• Repack the load before descending steep hills

When used properly, a trailer turns the Grolar into a backcountry utility vehicle that rivals small ATVs for hauling efficiency.

How Load Impacts Battery Life

The Grolar’s standard range rating is up to 85 miles under ideal conditions. Add weight—gear, feed, a trailer, or a harvested deer—and that number naturally drops. This isn’t a flaw; it’s simply physics.

Weight affects:

• Torque demand
• Motor output
• Battery draw
• Speed and acceleration

A heavier load requires more motor support to maintain momentum, especially when climbing or riding through soft ground.

That said, the AWD system helps conserve energy by distributing torque efficiently. Still, tactical riders should keep load-related energy loss in mind when planning long days or multiple trips.

If range is a concern, add Birch’s rear-rack range extender battery, which doubles the Grolar’s mileage to 155 miles. For hunters heading deep into unfamiliar territory, that upgrade is worth every penny.

Real-World Takeaway: The Grolar Is Built for Work

Everything about the Birch Grolar—from its dual motors to its oversized frame geometry to its rugged racks—shows that this bike wasn’t built for casual paved cruising. It is, without exaggeration, a backcountry workhorse.

Whether you're hauling:

• Quartered deer
• Camp gear
• Chainsaws and tools
• Feed bags
• Photography kits
• Fishing equipment
• Firewood
• Or even (as testing proved) several ATVs

…the Grolar doesn't complain. It pulls, pushes, climbs, and tears through rough terrain with the confidence of a bike that’s engineered for more than its rating suggests.

You're not buying a number on a spec sheet. You’re buying real-world capability—backed by tested, proven performance.

Stay Adventurous and Carry More with Birch

If load-bearing performance is at the top of your priority list, the Birch Grolar is a standout. It not only handles its rated 400 lbs with ease—it goes far beyond in practical tests and extreme demonstrations. Whether you're hauling game, carrying gear for multi-day trips, or using trailers to transport equipment, the Grolar gives you the stability, torque, and durability needed for serious backcountry work.

Ready to see what the Grolar can carry for you? Explore the Birch Grolar today, and pair it with Birch’s rear-rack battery extender to double your range while leaving your rack usable for gear. This is the bike built for riders who demand more—more power, more hauling, and more capability in the wild.