Suzuki GSX-R 600 (2026) vs Harley-Davidson Harley Davidson Street Glide Ultra (2025) vs Kawasaki KDX 125 (1990-92)
Comparison technical specifications
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| Make: | Suzuki | Harley-Davidson | Kawasaki |
| Model: | GSX-R 600 | Harley Davidson Street Glide Ultra | KDX 125 |
| Years: | 2026 | 2025 | 1990-92 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, V-Twin, Milwaukee-Eight 117, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder | Two stroke, single cylinder, with KIPS |
| Capacity: | 599 c / 36.6 cub. in. | 1923 cc / 117 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 67.0 x 42.5 mm | 103.5 x 114.3 mm | 56 х 50.6 mm |
| Compression Ratio: | 12.8:1 | 10.3:1 | 8,0:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Induction: | EFI, Four 40 mm throttle bodies, 2 valves per body. S-DMS engine management system | Electronic sequential port fuel injection (ESPFI) | Keihin PE28 carburetor |
| Ignition: | Digital CDI | Single-fire, non-wasted, map-controlled spark ignition | CDI |
| Starting: | Electric | Electric | Electric |
| Max Power: | 93.2 kW / 125 hp @ 13500 rpm with maximum RAM air | 105 hp / 78 kW @ 4600 rpm | 24 hp / 17.8 kW @ 9600 rpm |
| Max Torque: | 67.7 Nm / 6.9 kgf-m / 49.9 ft-lb @ 11500 rpm, RAM air | 176 Nm / 130 lb-ft @ 3250 rpm | 21.8 Nm / 16 lb-ft @ 8600 rpm |
| Clutch: | Wet, slipper, cable operated | Pressurized, dry-sump with oil cooler | Multi-disc clutch in oil bath |
| Transmission: | 6 Speed, constant mesh | 6-Speed, cruise drive | 6 Speed |
| Final Drive: | #525 Chain, 114 links | Belt, 32/68 ratio | Chain |
| Front Suspension: | Showa Big Piston front-Fork (BPF) | 49mm Dual bending valve | Kayaba 48mm telescopic hydraulic fork reversed KAYABA 48mm, double adjustment + adjustable spring preload, prepared |
| Rear Suspension: | Link type, coil spring, oil damped | Dual Outboard Emulsion with Preload Adjustability | Uni-Trak adjustable for preload |
| Front Wheel Travel: | 125 mm / 4.9 in. | 117 mm / 4.6 in | 300 mm / 11.8 in |
| Rear Wheel Travel: | 130 mm / 5.1 in. | 76 mm / 3.0 in | 320 mm / 12.5 in |
| Front Brakes: | 2 x 310 mm Discs, Brembo 4 piston calipers | 2 x 320mm discs, 4-piston fixed dual axially mounted front calipers | Single 260mm disc |
| Rear Brakes: | Single 220 mm disc, Nissin 2 piston caliper | Single 300mm disc, single axially mounted caliper | Single 220mm disc |
| Front Tyre: | 120/70 ZR17 | 130/60B19 M/C 61H, Dunlop? Harley-Davidson Series, bias blackwall | 70/100-21 |
| Rear Tyre: | 180/55 ZR17 | BW 180/55B18 M/C 80H, Dunlop? Harley-Davidson Series, bias blackwall | 4.10-18 |
| Wheelbase: | 1385 mm / 54.5 in. | 1625 mm / 64 in | 1455 mm / 57.3 in to 1480 mm / 58.2 inaccording to chain tension |
| Ground clearance: | 130 mm / 5.1 in. | 135 mm / 5.3 in | 365 mm / 14.3 in |
| Dry Weight: | 160 kg / 352 lbs | 377 kg / 831 lbs | 98 kg / 216 lbs |
| Fuel Capacity: | 17 Litres / 4.5 US gal / 3.7 Imp gal | 22.7 Litres / 6.0 US gal | 9.0 Litres / 2.3 US gal |