Suzuki GSX-R750, 2011-2020 (L1-L9)
 

Currently the longest ever produced GSX-R 750 series without any major changes.
New model
Clean and sleek body style, new headlight
Addition of Italian made Brembo brake calipers (front) and Nissin (back).
The 2011 model is about 9 kg lighter than the previous year's model. It has a "back torque limiting" clutch that allows for slicker downshifting. A lightweight Showa Big Piston Fork (BPF) comes standard along with a Showa rear shock.
Features a more compacted instrument panel which was inspired by the GSX-R1000 instrument panel.
The engine power produced at the rear wheel is 127.9 hp
The wet weight is 194.1 kg

Suzuki GSX-R750, 2008-2010 (K8-K9)
 

New model - revised headlights, new colors, multi-mode power adjustments.
At the rear wheel, the engine produces 123 hp (92 kW)
The dry weight is 179 kg

Suzuki GSX-R750, 2006-2007 (K6-K7)
 

Redesign year.
New frame and swingarm and motor.
Stroke increased and transmission is now stacked. Rotors also went from 300 mm to 310 mm.
Modifications compared to the previous model include all-new compact and lightweight 4-stroke, 4-cylinder, liquid-cooled engine designed for overall weight reduction, optimum combustion efficiency, and power delivery.
Re-designed cylinder head with narrower valve angles creating a more compact combustion chamber design, higher 12.5:1 compression ratio, large intake and exhaust ports for improved intake and exhaust efficiency, and high power output Valve bucket diameters are increased to work with more aggressive camshafts.
Lightweight titanium valves with steel alloy springs and aluminum spring retainers operated by thin-wall hollow camshafts to reduce weight and inertia.
 

Suzuki GSX-R750, 2000-2005 (K1-K5)
 

All New Model covering 2000 through 2003, Lighter Stronger Faster: Sometimes called “superman bike” because of headlight shape.
Engine: Much smaller yet stronger motor, upgraded fuel injection with improved fueling correction for barometric pressure/altitude, redesigned narrower cylinder head with straighter intake tracts, bigger air box, better ram air, stainless steel 4 into 1 exhaust, lighter stronger engine components, and covers
Body: More aerodynamic bodywork, smaller frontal area, redesigned instrument cluster, new LCD information (odometer, coolant temperature, clock).
Frame: New re-designed twin spar frame, extended swingarm, lighter front brakes to reduce unsprung mass, lighter cast wheels to reduce rotating mass.

2001 (K1): Transmission had a number of parts changed due to design defect that caused 2nd gear to slip and cause transmission failures. The input shaft and a number of other parts were upgraded and an internal service bulletin issued by Suzuki to its dealerships

2002 (K2): Few minor tweaks for 2002: Changes to the EFI, new adjustable swingarm, new mirrors, and new fully brushed exhaust.

2003 (K3): Colors changed. First-year that bikes have lights on 24 hrs

2004 (K4): Refined version of the 00-03 model years. ECU now 32 bit, from 16 bit, titanium valves, new body work, black powdercoated frame and swingarm, and 4-piston radially mounted Tokico brakes. The engine produced 147 hp. Dry weight was just 163 kg making it one of the lightest GSX-R's ever produced.

2005 (K5): Besides changing color on the motorcycle, Suzuki celebrated the 20th anniversary of the model by launching the Suzuki 20th Anniversary GSX-R 750, which included custom paint, custom exhaust, and sunex brake rotors... EL blue chain, blue seat and 20th-anniversary placards
 

Suzuki GSX-R750, older models, 1985-2000
Suzuki GSX-R750 is a family of 750 cc sports motorcycles from Suzuki's GSX-R series of motorcycles. Looking like a Suzuki Endurance racer, it can be considered to be the first affordable, modern racer-replica suitable for road use. It was introduced at the Cologne Motorcycle Show in October 1984.

Air and oil cooled = 1985-1991
Model: F, G, H, J, K, L, M
     

Water-cooled = 1992-1995
Model: WN, WP, WR, WS



SRAD, Suzuki Ram Air Direct = 1996-2000
Model: T, V, W, X, Y