Spec Gearbox Ratio FZ16/BYSON berdasarkan Service Manualnya (CMIIW)

Primary Reduction = 75/22 (3.409)
Secondary Reduction = 40/14 (2.857)
1st = 38/14 (2.714)
2nd = 34/19 (1.789)
3rd = 29/22 (1.318)
4th = 23/22 (1.045)
5th = 21/24 (0.875)

lingkar ban belakang: 195cm = 0,00195 Km

max output : 13.73PS /7500rpm

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Total Rasio reduksi = Primary reduction ratio x Transmission gear ratio x Final reductio ratio.

Misal yang pengen kita tau di gigi 5, maka:
Total Rasio reduksi = 3.409 x 0.875 x 2.857 = 8.522

Trus di yang kita pengen tau top speed pada saat peak power di RPM 7500.
Putaran mesin perjam= RPM x 60 minutes = 7500 x 60 = 450000

Kecepatannya = (450000 / 8.522) x 0.00195 = 52804.506 x 0.00195 = 102.968 km/jam

Gimana kalo di RPM red line 9000 RPM, dan gear ke 5 ???
Kecepatanya bakal = (540000 / 8.522) x 0.00195 = 123.6 km/h

Di 10000 RPM gear ke-5 sanggup 137.3km/h

Tapi itu dia tergantung kopling bagus enggak (kampas/per dll) plus bobot total 
CMIIWsama jarak dah.....
sumber
http://www.kaskus.us/showthread.php?t=8870863