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2021 Guerrilla Gravity Gnarvana Rally Like Barelli Signature Bike

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2021 Guerrilla Gravity Gnarvana (Metallic Gold decals; custom build shown)
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Vital Test Sessions - Guerrilla Gravity Gnarvana

It says Rally Like Barelli on the top tube, we did our best to oblige.

Vital Review
Vital Test Sessions - Guerrilla Gravity Gnarvana

Guerrilla Gravity is a Colorado-based outfit that is manufacturing its frames in-house. They use a material called Revved Carbon and a proprietary method to form the front ends. GG also takes a modular approach to frames. Riders can swap out the rear of their bikes to achieve more travel or alter the wheel size. As of right now, the Gnarvana is only available as a full 29er.

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Strengths

  • Comfortable at high speeds
  • Suspension feel through rough terrain
  • High threshold for the gnar

Weaknesses

  • Tight, slower corners
  • Takes a lot of steering input

Highlights

  • 29-inch wheels
  • 160mm (6.3-inches) rear travel // 170mm (6.7-inches) fork travel
  • Revved Carbon front triangle with 6061 aluminum rear triangle
  • Modular Frame Platform
  • Freedom Linkage suspension
  • GeoAdjust headset with 10mm of reach and wheelbase adjustment
  • Integrated-External cable routing
  • Frame Storage System with mounting bracket for tools and a tube
  • Water bottle mount
  • 73mm BSA threaded bottom bracket with removable ISCG05 chainguide mount
  • 12x148mm Boost rear hub
  • SRAM Universal Derailleur Hanger
  • Designed and manufactured in the USA
  • Price: $5,905 as tested

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The Gnarvana is GG's biggest bike, boasting 160mm of rear travel to accompany the 170mm travel fork. Vital had a First Look with the Gnarvana shortly after its launch and found it to be an absolute monster on the trails. Guerrilla Gravity uses an adjustable headset cup that alters the frame's reach. During our initial test, we rode a larger frame in the long setting for maximum send. For Test Sessions, we wanted to take a different approach and see if there was more to the Gnarvana. With two of our testers firmly in the Size 2 category and two of our testers just on the cusp of Size 3, we opted for the 2.

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Here are the numbers as they shook out for our Size 2 test bike - Being only 1mm smaller than the Banshee (and the same as one bike that did not make the test in time) meant the Gnarvana had the smallest reach in this test a 444mm. This is offset by a longer 450mm chainstay length. With a 63.7-degree (the second most-slack in test) the Gnarvana ends up with a 1239mm wheelbase. This put the Gnarvana as the same length as the Pivot Firebird, despite having a 24mm shorter reach. A 76-degree seat tube angle made for a comfortable ride when seated and helped to propel the Gnarvana up the hills.

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Our particular build is Yoann Barelli's signature build. Like all Guerrilla Gravity bikes, you can still customized the parts to your heart's desire. Ours is the default build. Keeping sponsor correct, the bike starts with RockShox suspension in the form of a Zeb Select+ fork and Super Deluxe Select+ rear shock. The drivetrain stays SRAM with a GX Eagle 12-speed build and Code R brakes with a 200mm front rotor and 180mm rear. Nice touches like a PNW bar and grip combo along with a custom SDG saddle help make a custom feel. Industry Nine supplies the wheels and hubs with the Enduro 305 and some flashy gold spokes to help you find the valve stem. Only our Maxxis Assegai 3C EXO+ tires broke from the stock build, which would have given us Hutchinson Griffus RLab tires. This resulted in a $10 upcharge when replicated through the site.

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Rider Setup

Our testing team fussed with their settings during testing. The numbers below represent where they settled in the end.Compression clicks all started at the factory recommended settings and moved on from there. For simplicity sake, here are the highlight numbers that each tester used.

Casey Coffman

  • 5-foot, 9-inches
  • 180-pounds
  • Fork - 62.5psi, 3 tokens
  • Rear shock - 170psi
  • Front/Rear tire - 24psi, 26psi

Andrea Napoli

  • 5-foot, 8-inches
  • 140-pounds
  • Fork - 47psi, 2 tokens
  • Rear shock - 125psi
  • Front/Rear tire - 19psi/22psi

Ryan Lummis

  • 5-foot, 8-inches
  • 160-pounds
  • Fork - 55psi, 3 tokens
  • Rear shock - 154psi
  • Front/Rear tire - 23psi/26psi

Brad Howell

  • 5-foot, 9-inches
  • 165-pounds
  • Fork - 55psi, 3 tokens
  • Rear shock - 156psi
  • Front/Rear tire - 24psi/27psi

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On the Trail

There are bikes upon which riders get a quick and easy read, knowing very soon where the limits are. Then there are bikes like the Gnarvana. It takes time to figure out what to expect here but once you do, there is a world of wild riding waiting to be tamed. The Gnarvana is particularly interesting because it is a handful at low speeds but really comes alive when other bikes start to show the limits of their ability.

On the whole, it felt like a big bike, much bigger than its numbers on a chart. This could, in part, be explained by the long chainstay. At 450mm, the back end of this bike was the second longest in our test. Testers noted having to use much more steering input to make the Gnarvana move through the corners. It was described as a bike that takes a heavy hand and aggressive rider to make it perform. Smaller testers did find the Gnarvana to deliver confidence and sent a message of whatever happens, it will have their back.

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Rear suspension performance could almost be described as a tad harsh off the top. Once into the mid-stroke however, the Gnarvana is butter-smooth and puts on a master class in making softball to small bowling ball sized rocks disappear. Despite constantly blowing the fun-o-meter (sag ring) off the shock, we didn't get much in the way of harsh bottom-out from the Gnarvana. That said, a little more ramp out of the rear end would have lent more pop and could have diversified some of the Gnarvana's trail manners. It is worth noting that Barelli runs aRockShox MegNegcan on his personal rig. Perhaps he is looking for the same thing?

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Enduro bikes need to climb, it is what separates them from downhill bikes. The Gnarvana is a bike that puts riders in an upright and comfortable stance on the uphills. Testers did note the pedaling platform was solid and lent to an efficient ride. This may not be a mountain biker's first choice for an all-day epic though. The longer nature and bold inputs that make this bike perform downhill can be somewhat tiring on the climbs.

Build Kit

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On the parts spec side, we were quite impressed with the RockShox Select+ performance from both ends of the bike. We found the damping simple and effective to tune. Most of the magic came from adding two (for a total of three) volume reducers to the Zeb fork to assist with ride height in the steeps. Our Zeb did a fantastic job of taking on the rowdiest sections of trail and kept the Gnarvana on line.

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If we were to make use of Guerrilla Gravity's customization tool on the site, it would absolutely be to upgrade the brakes to at least Code RSC models. The Code R that come on the bike had a terribly long lever throw. Despite bleeding them, we still wound up pulling the wheels and squeezing the levers to adjust the pads in. We got a touch of rub but it was better that than not being able to control this beast.

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Our other complaint would be the 150mm dropper. The SDG Tellis works just fine, there just wasn't enough drop for our crew's preference. Again, riders can customize this when ordering a bike. SDG does offer the Tellis in a 170mm drop but Gurrilla Gravity has offerings from other brands too.

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If high-speed chunk are routine in your rides, the Gnarvana is ready to eat.

Vital Test Session Take

It seems the Gnarvana is a specialist in the arena of tackling the more extreme terrain out there. Whether you decide to go with a larger frame or not will only affect the magnitude by which these traits are leveraged. To us, that is just fine. Guerrilla Gravity do not bill this bike as an all-rounder and they're making no apologies. If high-speed chunk are routine in your rides, the Gnarvana is ready to eat. For this particular bike, we'd suggest an upgrade to the brake levers and possibly looking at the RockShox MegNeg can to squeeze a little more out of this awesome platform.

Head here to catch the full 2021 Enduro Test Session Feature

Learn more about the Guerrilla Gravity Gnarva at ridegg.com

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Specifications

Product Guerrilla Gravity Gnarvana Rally Like Barelli Signature Bike
Model Year 2021
Riding Type Enduro / All-Mountain, Freeride / Bike Park
Rider Unisex
Sizes and Geometry
Size 2, Size 3, Size 4 View Geometry
Size Size 2 Size 3 Size 4
Top Tube Length 590-600mm 620-630mm 655-666mm
Head Tube Angle 63.6° 63.6° 63.6°
Head Tube Length 100mm 120mm 140mm
Seat Tube Angle 76.1° 76.0° 75.9°
Seat Tube Length 400mm 430mm 480mm
Bottom Bracket Height 347mm 347mm 347mm
Chainstay Length 450mm 450mm 450mm
Wheelbase 1229-1239mm 1263-1273mm 1301-1311mm
Standover 743mm 744mm 745mm
Reach 434-444mm 460-470mm 488-498mm
Stack 618mm 636mm 654mm
* Additional Info All specifications listed are with 170mm travel fork.
Top Tube/Wheelbase/Reach values adjustable by 10mm via GeoAdjust headset orientation.
Wheel Size 29"
Frame Material Carbon Fiber
Frame Material Details Revved Carbon Technology front triangle, 6061 aluminum rear triangle; molded rubber chainstay, seatstay, and down tube protection
Rear Travel 160mm
Rear Shock Cane Creek DB Kitsuma Air, 230mm x 65mm
Options: RockShox Super Deluxe Select, RockShox Super Deluxe Select+, MRP Hazzard with Enduro SL spring, PUSH ELEVENSIX
Fork RockShox ZEB Select+
Option: RockShox ZEB Ultimate
Fork Travel 170mm
Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
Headset Guerrilla Gravity GeoAdjust
Handlebar PNW Range
Option: e*thirteen Race Carbon, 800mm width, 20mm rise, 35mm clamp diameter
Stem Industry Nine A35, 35mm bar clamp, Yoann Barelli Custom Gold, 40mm or 50mm length
Grips PNW Loam, lock-on
Brakes SRAM Code R, 4 piston, SRAM CenterLine rotors
Options: Shimano Deore XT M8120 with RT86 rotors, Shimano XTR M9120 with RT86 rotors, Magura MT7 Pro with Storm HC rotors
Brake Levers SRAM Code R
Drivetrain 1x
Shifters SRAM GX Eagle, 12-speed
Drivetrain option: SRAM X01 Eagle
Front Derailleur None
Rear Derailleur SRAM GX Eagle, 12-speed
Drivetrain option: SRAM X01 Eagle
ISCG Tabs ISCG05
Chainguide None
Options: MRP 1x, MRP XCG, MRP AMg alloy
Cranks Truvativ Descendant 6K
Option: Truvativ Descendant Carbon (with SRAM X01 drivetrain)
Chainrings Truvativ Descendant
Bottom Bracket SRAM, 73mm English/BSA threaded
Pedals None
Chain SRAM GX Eagle, 12-speed
Drivetrain option: SRAM X01 Eagle
Cassette SRAM GX Eagle XG-1275, 12-speed, 10-52 tooth
Drivetrain option: SRAM X01 Eagle
Rims Industry Nine Enduro 305 Yoann Barelli Custom wheelset
Option: DT Swiss M1900 i30 wheelset
Hubs Industry Nine Enduro 305 Yoann Barelli Custom wheelset, 110x15mm Boost front, 148x12mm Boost rear with XD driver
Option: DT Swiss M1900 i30 wheelset
Spokes Industry Nine Enduro 305 Yoann Barelli Custom wheelset
Option: DT Swiss M1900 i30 wheelset
Tires Maxxis Assegai, 3C, EXO+, TR, 29" x 2.5"
Front options: Maxxis Minion DHF, 3C, EXO, TR, 29" x 2.5"; Maxxis Dissector, 3C, EXO, TR, 29" x 2.4"; Hutchinson Griffus RLab, 2x66 TPI, 29" 2.5"
Rear options: Maxxis Dissector, 3C, EXO, TR, 29" x 2.4"; Maxxis Aggressor, EXO, TR, 29" x 2.5"; Hutchinson Griffus RLab, 2x66 TPI, 29" 2.5"
Saddle SDG Bel-Air V3 Yoann Barelli Custom
Seatpost SDG Tellis dropper; 125, 150, or 170mm drop
Option: BikeYoke Revive dropper; 160, 185, or 213mm drop
Seatpost Diameter 30.9mm
Seatpost Clamp Single bolt, 37mm
Rear Dropout / Hub Dimensions 148x12mm Boost
Max. Tire Size 29" x 2.5"
Bottle Cage Mounts One inside front triangle, plus Frame Storage System mount for tools/tube
Colors Grey
Decal color options: Metallic Silver, Black, Metallic Blue, Metallic Red, Orange, Metallic Gold, Metallic Purple
Warranty Lifetime frame support with discounted replacement
Weight 33 lb 14.4 oz (15,377 g)
Miscellaneous • Freedom Linkage suspension design
• Top Tube/Wheelbase/Reach values adjustable by 10mm via GeoAdjust headset orientation
• Integrated-External cable routing
• Modular Frame Platform and Seatstay Tuning Kits allows conversion of bike from one model to another
• Weight given for size 2 frame
• Photos show custom build
Price $5,970
More Info

ridegg.com

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