A Field Guide to the Suzuki GT550

Model Year 1976 (A)

Please refer to the Country Specific Versions section for additional information about machines sold into your market.

Changes:

As previously detailed very late 'M' and early 'A' engines fitted with the SCEM barrels had the carburettor main jet changed for the left cylinder from #102.5 to #105.
De-rating on 48.0 DIN hp at 7,500 rev (previously 48.5 DIN hp)
Softer, horizontally ribbed rubber grips were used on the handlebars (57211-28600 for the left and 57110-34600 for the right).

Shorter front fender (53100-31703) with only one fender stay.
The highly polished aluminium "SUZUKI" logo on the tank was now san-serif and secured with screws.
The RAM AIR system logo is glued on most A-models
From engine number 71022 the gear ratio was changed (see below)
- Second and third gears are strengthened as per USA Suzuki Service Bulletin #29 may be viewed at this link.
The individual silencers now had 8 instead of the earlier 5 spot welds on the internal dividers in the the non-NA models having SCEM fitted barrels.
Ignition, starter motor, alternator and regulator by 'Nippon Denso' as standard in most markets.
Always on headlamp as per USA Suzuki Service Bulletin #31 may be viewed at this link.
The passenger grab rail was optional in most markets.

Power:

48.0 DIN hp at 7,500 RPM (EU models)

Gear ratio:

1st gear: 2,333 (previously 2,846)
2nd gear: 1.632 (previously 1.736)
3rd gear: 1,364 (previously 1,363)
4th Gear: 1.125 (previously 1.125)
5th gear: 0.962 (previously 0.923)

Final Drive Ratio: 15/36 (EU) 16/40(North America)

Painted parts: Tank, side covers

Colours (varied by market):

(Each with silver and gold trim lines on the tank)