| Parameter | Specification |
|---|---|
| Production Years | 2010 – 2016 |
| Engine Oil | 10W-40 JASO MA/MA2 (3.5 L) |
| Tires (F/R) | 120/70 ZR 17 / 180/55 ZR 17 |
| Tire Pressure | F: 2.5 bar / R: 2.9 bar |
| Battery | YT12A-BS |
| Spark Plugs | NGK CR7E / DENSO U22ESR-N |
Historical Engineering Highlight: While often mistaken for a mere “fairing-swap” of the GSF1250 Bandit, the GSX 1250 F/FA was specifically engineered to optimize airflow and thermal management. It utilized a unique full-fairing design developed in a wind tunnel to maximize high-speed stability, effectively bridging the engineering gap between a standard naked bike and a dedicated trans-continental tourer.
Technical Overview: The ‘Big Block’ Torque Monster
The heart of the GSX 1250 F is its 1255cc liquid-cooled, DOHC, fuel-injected engine. Unlike high-revving supersports, this powerplant was designed for massive low-to-midrange torque. The inclusion of Suzuki Dual Throttle Valve (SDTV) technology ensures smooth power delivery and optimal combustion efficiency, making it a favorite for long-distance touring and heavy-load commuting.
Maintenance Protocols
Lubrication System
To maintain the longevity of the 1255cc engine, Suzuki specifies 3.5 liters of engine oil. The viscosity should be SAE 10W-40, meeting API classifications from SF to SM. Crucially, it must adhere to JASO MA/MA2 standards to ensure the wet clutch operates without slippage.
Chassis and Contact Patch
The WVCH chassis relies on a standard sport-touring tire configuration. For optimal handling and safety, the 120/70 ZR 17 front and 180/55 ZR 17 rear tires should be maintained at 2.5 bar (36 psi) and 2.9 bar (42 psi) respectively. Deviating from these pressures significantly impacts the bike’s ability to tip into corners, given its relatively high curb weight.
Electrical and Ignition
The ignition system utilizes dual-electrode plugs (NGK CR7E or DENSO U22ESR-N) to ensure reliable cold starts and consistent firing under load. The electrical system is supported by a YT12A-BS battery, which provides the necessary cold cranking amps to turn over the large-displacement inline-four.
Editorial Verdict
At MotoSpecsLab, we classify the Suzuki GSX 1250 F/FA as one of the most cost-effective heavy-duty tourers ever produced. Its engineering is robust, bordering on over-engineered, which leads to exceptional reliability if the basic maintenance schedule is followed. It lacks the complex electronics of modern successors, which many purists argue is its greatest technical strength.
Frequently Asked Questions
Q: How often should I change the spark plugs?
A: It is recommended to inspect them every 12,000 km (7,500 miles) and replace them every 24,000 km (15,000 miles).
Q: Does the GSX 1250 FA have ABS as standard?
A: Yes, the ‘FA’ designation specifically denotes the inclusion of Suzuki’s Anti-lock Braking System as a standard feature.