integral shift differential 16-tooth/18-tooth/shift/integrated/split size models are complete

this product is an electric tricycle gearbox, a universal motor tooth bag, and a rear axle differential gearbox good mute effect, excellent anti-wear protection, sufficient power, durable and long service life, strong bearing capacity, smooth operation and easier climbing. excellent anti-wear protection good quiet effect easier climbing long service life power foot transmission anti-wear protection provides an effective protection mechanism for engine performance this product is electric tricycle gearbox, universal motor tooth bag, rear axle differential gearbox.syi