Kit relação/transmissão com retentor ou sem retentor? Qual a diferença? Qual é melhor?

Transmission/gearbox kit with or without seal for motorcycle? What is the difference between a chain with and without seal? What are the advantages and disadvantages of a transmission kit or gearbox kit with seal? What are the advantages and disadvantages of a transmission kit or gearbox kit without seal? What is the best cost-benefit ratio in a transmission kit or gearbox kit, with or without seal? Is a gearbox kit with seal worth it? In this video I answer all these questions and show in practice how a gearbox kit with seal, despite being superior, does not work miracles!!! Many times the extra amount paid for a gearbox kit with seal also ends up not being worth it when compared to a gearbox kit of the same brand without seal. This is due to a comparison of the useful life and the amount paid for each gearbox/transmission kit. Both the gearbox/transmission kit with seal and the one without seal work very well and have good durability as long as the clearance and lubrication are adjusted properly and with the necessary frequency. For those who do little maintenance, the transmission or relationship kit with seal is the most recommended because it maintains its internal lubrication and does not suffer from rain like the kit without seal, however there is no magic solution! Every kit requires maintenance and lubrication!