Lambretta 49 tooth first gearReproduction of the first gear for the series 2 and 3 TV 175 and SX 20049 teeth.Sourced in Italy!
INNOCENTI # 19230003
The Complete Spanner's Manual: Lambretta Scooters by Martin 'Sticky' Round Third Edition 8100072
The Unofficial Lambretta Manual Update by Mark Haines
LAMBRETTA - ILLUSTRATED GUIDE TO THE IDENTIFICATION by Vittorio Tessera
Lambretta Performance Tuning and Conversions - 8099990