Guerrilla Gravity updates its trail hardtail, the Pedalhead

Guerrilla Gravity Pedalhead
(Image credit: Guerrilla Gravity)

Guerrilla Gravity has relaunched its 29-inch wheeled Pedalhead hardtail as a limited release with a neat new swappable dropout system. The Pedalhead is the only hardtail in the Colorado-based bike manufacturer's range, and despite Guerrilla Gravity being known for its US-made alloy and Revved Carbon Technology framesets, the Pedalhead is made from steel.

The steel tubing is unusual too, as Guerrilla Gravity has kept the square tubing from the previous Pedalhead. Guerrilla Gravity claims that the square tubes add lateral frame stiffness for cornering and power transfer with vertical compliance to take the edge off of trail chatter. Whether or not that's the case, it certainly creates a striking-looking machine that would easily stand out amongst the best hardtail mountain bikes. As with all of Guerrilla Gravity's bikes, the frame design and manufacturing are carried out completely in-house in Colorado. 

Guerrilla Gravity Pedalhead

Guerrilla Gravity Pedalhead Race spec bike (Image credit: Guerrilla Gravity)

There are a few subtle changes to the shape of the frame as well. The seat tube is lower and straight, rather than kinked, to give a broader fit - which is lucky as Guerrilla Gravity only offers the Pedalhead in one size. The rear end foregoes the square tubing and instead has round profile seat and chainstays. The bottom bracket is a 73 mm BSA threaded and cable routing remains external - a home mechanics dream. 

There is stealth routing for the dropper post, ISCG mounts for a chain guide and clearance is rated up to a 2.6-inch tire. Guerrilla Gravity recommends a fork with between 120mm and 140mm of travel. At the 130mm sweet spot, the geometry sits around a capable 65-degree head angle with 428mm chainstays, 325mm bottom bracket, and a decently long top tube (636mm) and wheelbase (1218mm). The frame weight comes in at a claimed 2,563g.

Guerrilla Gravity Pedalhead dropouts

Going single-speed is as simple as swapping the drop-outs and fitting a single sprocket (Image credit: Guerrilla Gravity)

The big update on the Pedalhead is the new swappable dropout system. Designed especially for the Pedalhead, the proprietary dropouts allow riders to neatly convert the Pedalhead from a geared setup to a single-speed.

Hardtails and single-speed mountain biking have a very close connection, and using a modular drop-out system mean you can run a Sram UDH (Universal Derailleur Hanger) or swap to an adjustable sliding drop-out to tension the chain. The adjustable drop-out slides against itself and uses screws to fix the position so the chain tension doesn't need to be adjusted every time you remove the wheel. The rear end still uses a standard 12x148 boost rear end too so compatibility with different wheelsets isn't a problem.

Guerrilla Gravity offers three build options for the Pedalhead. There is the Ride (Pike Select, NX Drivetrain) for $3,495, the Rally (Pike Select+, GX Drivetrain) for $4,095, or the top of the range Race (Pike Ultimate, X01 Drivetrain) for $4,795.

For full details on the Guerrilla Gravity Pedalhead, as well as customization options, check out

Graham Cottingham
Senior reviews writer, Bike Perfect

Graham is all about riding bikes off-road. With almost 20 years of riding experience, he has dabbled in downhill, enduro, and gravel racing. Not afraid of a challenge, Graham has embraced bikepacking over the last few years and likes nothing more than strapping some bags to his bike and covering big miles to explore Scotland's wildernesses. When he isn’t shredding the gnar in the Tweed Valley, sleeping in bushes, or tinkering with bikes, he is writing tech reviews for Bike Perfect.

Rides: Cotic SolarisMax, Stooge MK4, 24 Bicycles Le Toy 3, Surly Steamroller

Height: 177cm

Weight: 71kg