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Hi, Nate Taylor here. Please reach out to me at nate@sscycleworks.com for inquiries on parts availabilities and shipping estimates.

Shifting upgrade kits

On this page: SunTour XC 7-speed to 8-speed hub and shifter upgrade kit | Paul’s Shimano Thumbies 22.2mm

See also: SunTour rear derailleurs | SunTour front derailleurs | SunTour shifters

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SunTour XC 7-speed to 8-speed hub and shifter upgrade kit. New, $400.00

• Kit includes Thumb shifter, cables, freehub body and axle.
• It does not include an 8-speed cassette. Please let us know if you need one.

Factory new.

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Paul’s Shimano Thumbies 22.2mm. New, taken off new bike. With 8-speed shifters, $235.00/set. Without, $150.00/set.

Here's an explanation on the maker's web site.

Here's the header card. Directions are posted below the Thumbies photos/

Here are the Thumbies with Shimano 8-speed fingertip/bar-end shifters.

Here they are turned over

A close-up

The left shifter mounted on a Thumbie

Here are the directions