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Giant Revolt E+ review

Powerhouse all-roader

Our rating 
4.0 out of 5 star rating 4.0
GBP £4,999.00 RRP | AUD $7,999.00
Pack shot of the Giant Revolt E+ adventure eBike

Our review

Handles long, rough, technical rides superbly, thanks to impressive power and agility
Pros: Great power and range; integrated system; fun handling
Cons: Weighty; doesn’t come cheap
Skip to view product specifications

The Revolt E+ is Giant’s entry into the fast-growing electric gravel bike category.

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The new Giant’s spec should see it compete with bikes such as Cairn’s value-packed Brave, Cannondale’s tech-laden Topstone Neo Carbon Lefty and the Canyon Grail:ON.

Giant has stepped away from its collaboration with Yamaha for the motor system and gone with Shimano’s mountain-bike derived EP8 motor for the Revolt E+.

Giant Revolt E+ specifications and details

Power and battery levels are displayed clearly.
Russell Burton / Our Media

Rather than just add in Shimano’s full motor system as Cairn did on the Brave, Giant has taken things a step further.

For starters, it has integrated the controller, called ‘RideControl Go’ into the top tube, with a series of five LEDs representing battery level sitting parallel to five lights showing the power level you’re running.

Shimano also provides the gravel-specific GRX Di2 1x drivetrain for the Revolt E+.

Cleverly, the motor and drivetrain both use the 500Wh EnergyPak internal battery as their power source. That also means you can use the GRX’s hidden control buttons on the side of the hoods to switch power modes on the motor so you don’t have to take your hands from the bars to shift modes. This is most welcome when you’re climbing up tricky off-road terrain with low levels of grip.

Giant Revolt E+ geometry

While the Revolt E+ may share a name with our newly crowned 2022 Bike of the Year, in geometry at least it’s quite a different beast. Up front, for instance, it’s a little more relaxed in its head angle (71 degrees). It also has a longer wheelbase by nearly 20mm (1,070mm).

It has the same stack and reach, though, at 615mm and 387mm respectively on my size-large test bike. This helps the ride position feel pretty sporty, and the Revolt E+ certainly brings a big fun element to any off-road excursion.

SMMLLXL
Seat angle (degrees)73.573737373
Head angle (degrees)7171717171
Chainstay (mm)455455455455455
Seat tube (mm)450475500525550
Top tube (mm)555555565575590
Head tube (mm)135150165180195
Fork offset (mm)5050505050
Trail (mm)68.868.868.868.868.8
Bottom bracket drop (mm)8585858585
Wheelbase (mm)1,0491,0491,0591,0701,085
Standover (mm)742747798810830
Stack (mm)573587601615629
Reach (mm)380375381387397
Handlebar width (mm)420440440460460
Stem length (mm)8090100110120
Crank length (mm)165170170170170

Giant Revolt E+ motor and battery details

The low positioning of the motor helps keep the bike stable.
Russell Burton / Our Media

Adding a big motor and battery to a gravel bike does somewhat change the dynamics of the ride and, at 18.17kg, the Revolt E+ isn’t exactly a lightweight, especially when you compare it to bikes such as 3T’s Exploro Boost or GT’s eGrade.

That said, the huge power and 85Nm of torque the EP8 motor can produce makes the Revolt E+ a bike capable of going much further than your average bike.

The five power levels may be more than you need, though. For 99 per cent of my testing, I never got beyond level three.

For double-digit inclines, however, you simply step up to level five by slickly shifting the Di2 into the 42-tooth cog, sitting in and powering up the slope. It’s like a mountain goat.

A 42-tooth cog helps you up the steepest of slopes.
Russell Burton / Our Media

The range of the Revolt E+ is obviously dependent on factors such as how much you’re carrying and your own weight. Then add in elevation changes, terrain, surface, temperature and even tyre pressures to affect the potential range even more.

My testing of a size large E+, carrying a bottle and bar bag alongside my 90kg frame, led to an impressive maximum range of 73.73 miles/118.65km with 6,676.6ft/2,035m of climbing.

The testing was all on warm spring days and around 95 per cent of the riding was off-road on a mixture of towpaths, singletracks, byways and gravel roads.

If you need to ride longer distances, you can add a range extender to give another 250Wh of energy for around £400. Even when I’d depleted the battery to nigh-on empty, the system kept enough in reserve to power the Di2 drivetrain, so you’ll never be left without power to the gears.

Giant Revolt E+ ride impressions

The fork design allows you to have a huge 53mm tyre width.
Russell Burton / Our Media

The ride of the E+ is, as you’d expect for an 18kg bike, quite firm, but Giant takes care of you with great contact points, such as the D-Fuse handlebar with its slightly backswept shape and flared drops, all wrapped in tacky, thick shock-cushioning tape.

Out back, the vibration-killing D-Fuse carbon post works superbly and the Approach saddle is a pleasant place to be seated for a few hours.

The 40mm-wide Maxxis gravel tyres are set up tubeless, so you have plenty of scope to play with tyre pressures, and the tyres aren’t so wide as to become a hindrance on tarmac.

I’d even be tempted to try out a wider tyre because the E+ has such potential off-road and the frame and fork allow for a massive 53mm maximum tyre width.

Despite the added weight of the motor system, the Revolt E+ feels surprisingly nimble when it comes to riding twisty singletrack trails, and the low-slung weight that’s also centred on the bike adds a huge feeling of stability when it comes to descending quickly, especially in the corners, both on and off-road.

Giant Revolt E+ bottom line

The battery range and motor power are really impressive.
Russell Burton / Our Media

Along with working well on commuter bikes, I think ebike systems function best on gravel bikes because the extra boost of power can help overcome grip problems.

On the Giant Revolt E+, the integration of the motor system is excellent, the ride quality is superb, and the power and range are more than ample.

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The result of all this is a hugely impressive electric gravel bike, although the price is high.

Product Specifications

Product

Price AUD $7999.00GBP £4999.00
Weight 18.17kg (L)
Brand Giant

Features

Available sizes S, M, ML, L, XL
Motor Shimano EP8 85Nm; Battery: EnergyPak Compact 500Wh; Controller: RideControl GO
Tyres Tubeless Maxxis Receptor 700x40mm
Stem Giant Contact
Shifter Shimano GRX Di2
Seatpost Giant D-Fuse SL, composite
Saddle Giant Approach saddle
Rear derailleur Shimano GRX Di2
Handlebar Giant Contact XR D-Fuse
Bottom bracket Integrated into motor
Grips/Tape Giant Connect tape
Frame Aluminium
Fork Composite
Cranks Shimano FC-EM600 crankarm Shimano SM-CRE80-R, 47T chainring
Chain KMC e.11 Turbo, EcoProteq
Cassette Shimano CS-M5100-11, 11-42, 11-speed
Brakes Shimano BR-RX810 hydraulic disc
Wheels Giant eX 2, Tubeless Ready, 700c Aluminium