Mainstay Chain Guide Upgrades Fold and store indoors for

Fold and store indoors for the best theft protection

Whether you’re tying down a push bike or carting around extra luggage

rattle-free design

Class 3 E-bike with Bosch Performance Sport motor provides up to 65 Nm of torque and 300% support

the saddle protector can be stowed away in a bag to save space or hidden under the saddle

Mainstay Chain Guide Upgrades Fold and store indoors forIf you could watch your chain, youd see waves of energy literally bounce the chain as it moves up and down the cassette or when riding on rough roads. With the shorter chainstays of folding bikes, the waves just get amplified in size. We spent 12 months modeling chain movement on different combinations of cassettes and chainrings and chainlines and developing a device to eliminate chain drops for all combinations. Thats new Tern Mainstay Chain Guide,