Close-Ratio Gear Set Suzuki Swift Sport ZC31S – 57KA 5-Speed (M16A)

Close-Ratio Synchro Gear Set – Suzuki Swift Sport ZC31S (57KA 5-Speed)

Close-ratio synchromesh gear set designed as a direct bolt-on for Suzuki Swift Sport ZC31S 1.6 16v (M16A) with the 57KA 5-speed gearbox (2005–2010). With minor modifications, it may be adaptable to other Suzuki models depending on the gearbox variant.

Gear ratios

• 1st: 3.167 (38x12)
• 2nd: 2.176 (37x17)
• 3rd: 1.579 (30x19)
• 4th: 1.250 (30x24)
• 5th: 1.037 (28x27)

Material & heat treatment

• Billet & forged Ni-Cr-Mo steel
• Hardness: HRC 56–60
• Surface: sandblasting, shot peening, WPC
• Heat treatments: carburizing & cryogenic

Possible compatible models (with modifications)

• Suzuki Swift (ZC11S / ZC21S / ZC71S)
• Suzuki SX4 (GY / RW / EY) with M16A
• Suzuki Liana / Aerio (depending on market/spec)

Depending on your build, minor setup adjustments may be required.