Suzuki GSX R 1100 GV73B spare parts

Suzuki GSX-R 1100 GV73B spare parts – The water-cooled superbike revolt

In 1991, Suzuki broke with its air/oil-cooled tradition and introduced the GSX-R 1100W before, internally GV73B called. The new double-loop aluminum frame enclosed a water-cooled DOHC four-cylinder that delivered 147 hp and exceeded the dry weight of its predecessors by 13 kg - a challenge to the Honda CBR 1000 F, Kawasaki ZZR 1100 and Yamaha FZR 1000. Today the GV73B is considered a turning point in the GSX-R evolution: state-of-the-art technology, but without modern electronic grilles. In order to keep the “oil boiler successor” in top shape, high-quality ones are used Suzuki GSX-R 1100 GV73B spare parts essential - from the water cooler to the USD fork service kit.

1 | History & Identification of the GV73B

“W” stands for Water cooled; Frame numbers begin with “JS1GV73B” followed by the year of manufacture prefix (“M” = 1991, “N” = 1992). Typical characteristics:

2 | Engine & intake – spare parts for 148 HP stability

The GV73B engine has 1127 cc (75.5 mm × 60 mm), 11.2: 1 compression, SCEM Nikasil cylinders and 38 mm Mikuni BST38SS flat slide carburetor. A high-pressure water pump flows around the head and cylinder bank; Oil continues to be cooled separately (“S-DACS”).

Practical: The cylinder and head are identical to the GSX-R 750 WN (GR7BB) - but the pistons and cams are 1100-specific. A Stage 1 jet kit (Dynojet 3110) and new rubber nozzles 13111-17E00 help with “flat-spot” acceleration.

3 | Chassis & brakes – precision with spare parts

The 43 mm USD Kayaba uses cartridge technology, the aluminum banana arm has a fully adjustable Showa shock absorber. Standard wheels: 3.50 × 17 front, 5.50 × 17 rear; Tires 120/70 - 17 & 180/55 - 17.

4 | Electrics & cooling – voltage under control

The GV73B has a 350W alternator, Kokusan CDI and a LiMa regulator unit on the left behind the radiator. Common “flicker” problems arise from browned regulator plugs (3-phase yellow).

• ✓ Mosfet regulator SH847AA + Adapterloom from Roadstercycle
• ✓ CDI box Kokusan 32900-17E30 (hard to find used → Ignitech)
• ✓ Radiator + aluminum expansion tank OEM 17710-17E00 / JSB aluminum tank

5 | Maintenance schedule – oil, valves, torque

• ✓ Oil 10W-40 + filter – 6,000 km (Suzuki K-Oil, KN-138)
• ✓ Valve clearance 0.15 mm inlet / 0.20 mm outlet - 12,000 km (shims 7.48 mm)
• ✓ coolant – 2 years, silicate free
• ✓ Carburetor synchronization – 6,000 km
• ✓ Brake disc thickness borders 4.5 mm (front) / 5.0 mm (rear)

6 | Typical weak points and their remedies

7 | Tuning & Upgrade Path – More punch, better control

• ✓ 1216 cm³ big bore (Suzuki Bandit 1200 pistons + Cometic MLS) – +12 HP, +10 Nm.
• ✓ Mikuni RS-38 Flatslide – responsive, 1kg lighter than BST.
• ✓ Öhlins FGK cartridge – Pull/High-Low Push setting for USD fork.
• ✓ Penske 8987 – 3-way adjustable shock absorber with remote reservoir.
• ✓ Titanium 4-in-1 (Yoshimura Duplex) – 6 kg weight saving, E-mark (dB killer).

8 | Spare parts supply & scene

Suzuki continues to stock key components (cylinder head gasket sets, valve guides, water pump). Specialists like Robinson's Foundry, JMA Engineering and Brewer performance offer SCEM coatings, gear undercut and replacement plastic panels in OEM colors. In forums (oldskoolsuzuki.info, gixxer.com) NOS instruments, frame reinforcements and original Tokico 6-piston sets are traded.

9 | Performance & collecting status

The water-cooled GSX-R 1100 W was the “disreputable” heavyweight for a long time - but interest is growing in 2025: original GV73Bs in Lucky Strike paint fetch €7,000; Tuned street fighters only €3,000. are value drivers OEM Suzuki spare parts, documented mileage under 50,000 km and an unwelded frame. Big-bore conversions increase driving pleasure, but reduce the collector's price, unless original cylinders are included.

10 | Conclusion – Why original parts keep the GV73B alive

The Suzuki GSX-R 1100 GV73B marks the transition from air/oil-cooled Slingshots to modern water-cooled superbikes. Their fascination comes from powerful torque, analogue driving experiences and a chassis that, after 30 years with exquisite spare parts, once again acts with impressive precision. Anyone who maintains valves, SCEM raceways and cooling systems – and consistently with a precise fit Suzuki GSX-R 1100 GV73B spare parts sets - gets a machine that combines speed and road sovereignty like hardly any other 90s superbike.

Keep the water-cooled icon – with tested ones Suzuki GSX-R 1100 GV73B spare parts Your W-Gixxer will drive reliably into the next era of classic superbikes.