Seems like you're in . Would you like to go to the store for ? Yes please, or No thanks.
account icon arrow-left-long icon arrow-left icon arrow-right-long icon arrow-right icon bag-outline icon bag icon cart-outline icon cart icon chevron-left icon chevron-right icon cross-circle icon cross icon expand-less-solid icon expand-less icon expand-more-solid icon expand-more icon facebook-square icon facebook icon google-plus icon instagram icon kickstarter icon layout-collage icon layout-columns icon layout-grid icon layout-list icon link icon Lock icon mail icon menu icon minus-circle-outline icon minus-circle icon minus icon payment-american_express icon payment-cirrus icon payment-diners_club icon payment-discover icon payment-google icon payment-interac icon payment-maestro icon payment-master icon payment-paypal icon payment-stripe icon payment-visa icon pinterest-circle icon pinterest icon play-circle-fill icon play-circle-outline icon plus-circle-outline icon plus-circle icon plus icon rss icon search icon shopify icon snapchat icon trip-advisor icon tumblr icon twitter icon vimeo icon vine icon yelp icon youtube icon city bike electric bike cargo bike folding bike Skip to main content
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide

Mainstay Chain Guide

The Solution to Chain Drops

$15.00
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide
Mainstay Chain Guide

Mainstay Chain Guide

The Solution to Chain Drops

$15.00

If you could watch your chain, you’d 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. That’s new Tern Mainstay Chain Guide, a patented design that keeps your chain in its place.

  • Eliminate chain drops typical with folding bikes
  • Works on all combinations of cassettes and chainrings and chainlines
  • Patented design


Color(s) Black
Dimensions 2.8” x 3.1” x 1.4”
Weight 0.1 lb
Load Capacity n/a
Volume Capacity n/a
Compatible Bikes Only Swoop D8. All Link and Verge bikes except Link D16, eLink & Verge X20, X18, P20, P18.
Compatible Items n/a
Material Nylon