For the late model Mini A Plus gearbox, with single groove identification, this standard ratio laygear was used throughout the range until MPI! No longer available new but we have available good used items in stock where we replace with a different laygear for our 5 speed gearbox conversions. These were 429-00 retail so this is a great saving anyway.
teeth sequence 15/21/26/30 with identification groove on 30 teeth end as identification marking.
If you are about to undertake a gearbox strip down and you are using an old Haynes manual beware. When locking the gearbox into 2 gears to undo the large mainshaft and Ist motion nuts, lock your gears into 1st and 4th. NOT 2nd and 3rd as stated in Haynes manual as you could very easily strip your laygear or 2nd /3rd gear.