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2023 Suzuki GSX-8S


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The GSX-8S is a stylish and modern entry into the midsize naked-bike category.
The GSX-8S is a stylish and modern entry into the midsize naked-bike category. (Suzuki/)

Ups

  • First new Suzuki engine in years
  • Engine and chassis designed in synchrony
  • Bidirectional quickshifter standard
  • Decent, name-brand suspension and brakes

Downs

  • Angular looks don’t appeal to all
  • Power figure won’t win many boasting matches
  • Strong competition from rivals in this part of the market
  • Parallel-twin engines tend to lack the visceral appeal of V-twins or inline-fours

Verdict

No company’s range seems complete without a midsize, twin-cylinder naked bike that fulfills the essential idea of a motorcycle without being pigeonholed into subgenre. For Suzuki that machine is the GSX-8S, a technological quantum leap forward compared to the SV650 and GSX-S750 that have long filled the space. Strong styling and high equipment levels allied to a clean-sheet design for the engine and chassis make it one of the most anticipated Suzukis in years.

The GSX-8S is available in three color options: white with blue wheels and subframe (seen here), blue with blue wheels and subframe, and all black.
The GSX-8S is available in three color options: white with blue wheels and subframe (seen here), blue with blue wheels and subframe, and all black. (Suzuki/)

Overview

In 1999 Suzuki shook up the establishment with the SV650; a true do-anything bike that was simultaneously capable, fun, and incredibly affordable. It could commute or cross continents and was as happy on track as on tour. The GSX-8S looks to build on that success, as the modern-day naked for the next generation of Suzuki riders.

Suzuki is undoubtedly proud of the GSX-8S and the careful steps engineers took to ensure that the bike would appeal to a wide range of riders, regardless of age or experience. Performance is important, but so too is balance, and in the GSX-8S, Suzuki aimed to find the middle ground between engine and suspension performance, ergonomics, and features.

An aggressive, mass-forward look falls in line with Suzuki’s new-generation styling concept, while a modest, but full-featured electronic rider-aid suite includes all the technology you’ll need in a bike aimed at everything from daily commutes to weekend trips to your favorite canyon roads.

While the GSX-8S has a longer-than-expected wheelbase, chassis geometry was adjusted to ensure nimble handling.
While the GSX-8S has a longer-than-expected wheelbase, chassis geometry was adjusted to ensure nimble handling. (Suzuki/)

Updates for 2023

Entirely new for 2023, the GSX-8S is one of two bikes (the other is the V-Strom 800DE) debuting Suzuki’s 82 hp, 776cc parallel-twin engine, which is expected to become a mainstay across multiple models for many years to come.

The chassis is a new design as well, while Suzuki has turned to notable suppliers for suspension and brakes.

Pricing and Variants

Just one version of the GSX-8S is available, so your choices are simply between three color options: white with blue wheels and subframe, blue with blue wheels and subframe, and all black. Suzuki does offer a whole range of accessories to tailor the bike to personal taste.

The GSX-8S has one of the boldest designs of any Suzuki released in recent years.
The GSX-8S has one of the boldest designs of any Suzuki released in recent years. (Suzuki/)

Competition

There’s no shortage of competition in this part of the market, although few bikes exactly match the GSX-8S’s mix of power, torque, and weight.

Slightly below it, there are machines like the Yamaha MT-07 ($8,199), Suzuki’s own SV650 ($7,849), and the Kawasaki Z650 ($7,749). The Honda CB650R ($9,399), Triumph Trident 660 ($8,595), and Aprilia Tuono 660 ($10,499) are all worthy contenders, as is KTM’s 790 Duke ($9,199). The Ducati Monster Plus ($12,995) is much more expensive, but another example of a great naked bike that’s loads of fun around town.

Distinctive short muffler is used, with an exhaust note that’s intended to bring some personality to the all-new parallel twin.
Distinctive short muffler is used, with an exhaust note that’s intended to bring some personality to the all-new parallel twin. (Suzuki/)

Powertrain: Engine, Transmission, and Performance

Suzuki took its time to develop the GSX-8S’s engine. It features some now familiar ideas—a 270-degree crankshaft, for instance, to give a V-twin-style throb—and some more novel ones including a patented dual balancer shaft setup to limit vibes. The 84mm bore and 70mm stroke are pretty moderate, particularly compared to Honda’s recently announced (but not yet available) Hornet (87 x 63.5mm) and KTM’s 790 Duke (88 x 65.7mm). This contributes to a strong 57.5 lb.-ft. of torque that peaks at 6,800 rpm, but it hits nearly that number several thousand rpm lower. The 82 hp power peak arrives at 8,500 rpm.

The GSX-8S features all the tech you’d expect in 2023, including ride-by-wire throttles that allow multiple modes and torque maps. Uneven-length intakes in an underseat airbox boost torque, while the engine breathes out via an under-belly exhaust.

The six-speed transmission is fitted with a bidirectional quickshifter, with rev-matching auto-blipper, and assist-and-slipper clutch as standard.

KYB fork uses dedicated suspension settings, but is nonadjustable.
KYB fork uses dedicated suspension settings, but is nonadjustable. (Suzuki/)

Chassis/Handling

Like the engine, the GSX-8S’s frame is an all-new design, but one that doesn’t set out to rewrite the rulebook. Two steel upper rails run above the engine, with a trellis-style section of chassis between the headstock and the upper engine mounts, and a pressed and welded steel section behind the motor to hold the aluminum swingarm.

At the back, the tubular steel subframe is a bolt-on design. The wheelbase is longer than you might expect, at 57.7 inches, and the 25-degree rake suggests a moderate balance between agility and stability.

KYB provides the nonadjustable USD fork and the rear monoshock. The cast alloy wheels are 17-inchers, with a surprisingly wide 180-section rear—substantially broader than the 160-section used on the more powerful Honda CB750 Hornet—to give a muscular look. The seat height is a modest 31.9 inches.

Nissin brakes are used front and rear, with four-piston front caliper biting on 310mm discs.
Nissin brakes are used front and rear, with four-piston front caliper biting on 310mm discs. (Suzuki/)

Brakes

Radial Nissin four-pot calipers on the front clamp a pair of 310mm discs, with the usual single-piston sliding caliper at the rear on a smaller 240mm rotor. ABS comes standard.

Fuel Economy and Real-World MPG

Suzuki’s claimed economy figures, tested under WMTC conditions, are 56 mpg (US). With a 3.7-gallon tank that suggests a range of 207 miles is theoretically possible.

Ergonomics: Comfort and Utility

The parallel-twin engine isn’t just simpler and more compact than a V-twin, it also helps improve the riding position, allowing the rider to sit further forward. A wide and relatively tall bar is paired to low pegs mounted almost directly beneath the seat for a riding position that’s both comfortable and gives plenty of control. Accessories including a small screen, soft luggage, and heated grips should all help boost the GSX-8S’s longer-range prospects.

A 5-inch TFT display offers a look at important information. The GSX-8S has three ride modes, and three traction control settings, plus off.
A 5-inch TFT display offers a look at important information. The GSX-8S has three ride modes, and three traction control settings, plus off. (Suzuki/)

Electronics

Three riding modes are on offer—A, B, and C (for “Active,” “Basic,” and “Comfort”)—each with a different throttle map to alter the power delivery. There’s also a trio of traction control settings with different levels of intervention, and standard ABS, although these systems don’t have the IMU needed to make them lean-angle sensitive. There’s full LED lighting, as you’d expect in 2023, and a 5-inch, color TFT dash with a choice of modes.

Additional technologies include Suzuki’s Easy Start System and Low RPM Assist System, which increases engine speed to smooth the power delivery when leaving from a standing start or riding at low speeds. As previously mentioned, a bidirectional quickshifter comes standard.

Warranty and Maintenance Coverage

There’s a 12-month, unlimited-mileage, limited warranty with the option to extend to longer cover periods via Suzuki Extended Protection.

2023 Suzuki GSX-8S Claimed Specs

MSRP: $8,849
Engine: DOHC, 776cc, liquid-cooled parallel twin, 4 valves/cyl.
Bore x Stroke: 84.0mm x 70.0mm
Transmission/Final Drive: 6-speed/chain
Fuel Delivery: Electronic fuel injection w/ 42mm throttle bodies
Clutch: Wet, multiple disc
Engine Management/Ignition: Ride-by-wire with multiple modes
Frame: Steel tube frame with bolt-on trellis subframe
Front Suspension: KYB inverted fork; 5.1 in. travel
Rear Suspension: KYB shock, preload adjustable
Front Brake: Nissin radial-mount 4-piston calipers, 310mm discs w/ ABS
Rear Brake: Nissin 1-piston caliper, 240mm disc w/ ABS
Wheels, Front/Rear: Cast-aluminum alloy; 17 in./17 in.
Tires, Front/Rear: 120/70-17 / 180/55-17
Rake/Trail: 25.0°/4.1 in.
Wheelbase: 57.7 in.
Ground Clearance: 5.7 in.
Seat Height: 31.9 in.
Fuel Capacity: 3.7 gal.
Wet Weight: 445 lb.
Contact: suzukicycles.com

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  • 6 months later...

I saw one of these for the first time today, parked up. I hadn't been a fan of the stock photos online but in all black in person it looked great. Rumours of there being a good chunk of power available with a remap makes it a nice option too. Photo is a bit crap as I was in a rush.IMG_20230815_174253.thumb.jpg.b1095a45097eb1a62f4e88759e61ee58.jpg

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