Cannondale have equipped their Topstone gravel platform with a suspension fork for the new Topstone Carbon Lefty 1. Can this scintillating bike convince us on the trails and do small 650B wheels fit the overall concept? You can find all the details and our first ride review here.

We already tested the Cannondale Topstone Carbon Ultegra RX without a Lefty fork in the course of our big gravel group test – now the Topstone Carbon Lefty 1 needs to show what it’s capable of.

Cannondale Topstone Carbon Lefty 1 | 9.90 kg in size M | € 7,499 € | Manufacturer’s website

“The gravel bike to beat all other gravel bikes.” There’s no doubt that Cannondale’s self-assured statement leads to high expectations for our first test. Having ridden the new Cannondale Topstone Carbon Neo 1 Lefty E-gravel bike, we were excited to see whether the suspension fork equipped Topstone could also shine without additional motor support.

One thing isn’t in question: the finish of the Topstone shines. Combined with the Lefty fork, the oil-slick effect of the paint makes the Topstone a head turner amongst the predominantly monotone range of dark and dull bikes that you’ll come across in the forest. The Lefty Oliver is claimed to be the perfect fork for the gravel sector with 30 mm travel and good stiffness for high speed and comfortable riding. That is complemented by the KingPin suspension system at the rear. The seat stays attach to the seat tube via a pivot, which, combined with built-in flex in the carbon frame, offers up to 30 mm of suspension travel.

The Topstone is also equipped with numerous mounting points on the seat tube, top tube and down tube. If you want even more options for attaching luggage and mudguards, you should take a closer look at the non-Lefty Topstone Carbon, which uses a conventional fork with additional mounting points for luggage or bottles. Dedicated bikepacking fans will no doubt be a little disappointed by the lack of mounts on the Lefty fork, but there’s a whole host of other features to discover on the Topstone Carbon Lefty. Alongside the one-sided fork, almost all of the tubeset is designed asymmetrically. As we’ve come to expect from Cannondale, the finish of the frame is very high quality, making the cable ports which have been left open all the more annoying and avoidable. The high position of the GPS mount integrated in the cockpit doesn’t look all that appealing, but offers more than enough space for a large bar bag for your bikepacking adventures.

Components and details of the Cannondale Topstone Carbon Lefty

The Topstone Carbon Lefty is available in two different builds. Our test bike, the Lefty 1, is equipped with a combined SRAM Force eTap AXS 1×12 and Eagle AXS X01 drivetrain, HollowGram carbon rims and HollowGram SAVE SystemBar cockpit. The Lefty 3 is fitted with a GRX 600 1×11 groupset and cheaper WTB aluminium rims.

Build of our test bike

Drivetrain SRAM Force eTap AXS with X01 Eagle AXS, 1 x 12, 40 t
Cassette SRAM XG-1295 Eagle, 10–50 t
Brakes SRAM Force AXS, 160/160 mm
Wheelset HollowGram 23 rims, Formula hubs
Tires WTB Venture up front, WTB Byway at the rear, 650 x 47B
Seatpost HollowGram SAVE, 15 mm offset
Bars HollowGram SAVE SystemBar, 420 mm
Stem HollowGram SAVE, 100 mm
Weight 9.90 kg in size M
Price € 7,499
Available immediately

The cool paint job is futuristic and sure to turn heads
The integration of the GPS mount isn’t the most aesthetically pleasing, but leaves enough space for a bar bag
The small 650B wheels react directly to steering input and let you corner quickly.
The open cable ports cloud the otherwise positive impression of the carbon frame
To remove the front wheel, the brake caliper mount first has to be removed – thankfully, that can be achieved within seconds with the handy lever

Geometry of the Cannondale Topstone Carbon Lefty 1

Größe XS S M L XL
Seat tube 410 mm 458 mm 505 mm 553 mm 600 mm
Top tube 525 mm 544 mm 561 mm 579 mm 596 mm
Head tube 97 mm 131 mm 165 mm 198 mm 232 mm
Head angle 70.0° 71.2° 71.2° 71.2° 71.2°
Seat angle 73.1° 73.1° 73.1° 73.1° 73.1°
Chainstays 415 mm 415 mm 415 mm 415 mm 415 mm
BB Drop 69 mm 64 mm 61 mm 61 mm 59 mm
Wheelbase 999 mm 1,010 mm 1,030 mm 1,049 mm 1,068 mm
Reach 368 mm 377 mm 385 mm 394 mm 401 mm
Stack 518 mm 550 mm 579 mm 610 mm 641 mm

Cannondale Topstone Carbon Lefty 1 first ride review

The Topstone Carbon Lefty makes a good impression from the first few metres, accelerating readily and quickly getting up to speed. It responds directly, efficiently converting your input into forward propulsion. In comparison to its rigid 700C sibling, it’s not an all-out rocket, but for a ‘fully’ it’s more than acceptable. The KingPin system doesn’t suck up your energy and when locked out, the Lefty fork is stiff enough to attack on the sprints during your gravel rides.

After the first few off-road metres you’ll quickly notice that this is where the Topstone feels at home! Roads are only a means to an end to get out into nature as quickly as possible. On off-road terrain, the Topstone shines with playful and agile handling and stays sprightly and light-footed along winding trails. The small 650B wheels steer quickly and directly, and combined with the short 415 mm chainstays, no corner is too tight to get around. However, there’s a flip side to that coin: on straight or monotonous terrain, this gravel bike isn’t the right partner. The Topstone Carbon Lefty needs action and excitement as it otherwise feels bored. In comparison to the conventional Topstone Carbon with 700C wheels, this bike is missing some stability, favouring a playful character instead.

Vibration damping at the rear is good and the KingPin system works well, allowing for comfortable hours spent in the saddle. To top it off, the HollowGram SAVE seatpost offers additional flex and comfort. The Lefty Oliver fork only uses up all of its 30 mm travel on bigger hits – you’ll notice cobbles but braking bumps on the trail or kerbs are well damped. The lockout on the fork works reliably and will even open in an emergency if you’ve forgotten about it.

The wide tires, a WTB Byway at the rear and a WTB Venture up front (both 650 x 47B), make for an interesting combination. The rear semi-slick tire, which carries more of the overall load, has been chosen for its quick rolling nature, while the increased grip of the front tire is supposed to avoid any spills. We would have wished for a more pronounced tread on the rear for improved braking on the trail as the Byway quickly loses traction. However, as long as the ground is compact and dry, things are relatively easy to keep in hand.

Cannondale Topstone Carbon Lefty 1 conclusion

The new Topstone Carbon Left 1 delivers a fun overall concept which makes you want to head out and ride every trail. The playful character delivers a lot of fun for riders that already have gravel experience, but less experienced riders could find the ride a little too playful. This bike fills the gap left by the rigid Topstone Carbon and expands Cannondale’s portfolio, with a bike and application that wasn’t yet covered. However, you’ll be looking for a true gravel all-rounder in vain here. The Topstone Carbon Lefty 1 is missing the necessary stability and performance on the roads to fill that role.

Tops

  • great finish that's sure to turn heads
  • high-quality finishing
  • playful handling
  • agile ride
  • good vibration damping

Flops

  • limited stability
  • integration of the GPS mount

You can find more information about the Cannondale Topstone Carbon Lefty 1 at cannondale.com

Do you want to know more about how other gravel bikes perform? You can find our big gravel group test here and an overview of all the bikes we’ve tested here.

Helmet POC Omne Air SPIN | Glasses100% S3 | Jersey Rapha Technical Shirt x EF Education First | Bibs Specialized Men’s RBX Adventure Bib Short w/ SWAT | SocksSpecialized Men’s Reflect Tall Socks | ShoesSpecialized S-Works Recon

Words: Philipp Schwab Photos: Max Schmitt, Benjamin Topf, Philipp Schwab