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Shop | Components | Drivetrain | Shifting | SHIMANO Thumbies

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SHIMANO Thumbies

Do you miss thumb shifters? Converting a drop bar bike to flat bars? These easily transform bar-end (aka barcon or TT) shifters into thumb shifters. The shifters are not included, but are readily available in 8 through 11-speed versions, and many have an option for friction-shifting. Heck, these will work on any indexed Shimano bar-end shifter going all the way back to 6 speed!

$60.00 – $192.00

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Technical Information

  • Material
    6061 Aluminum
  • Weight
    60g
  • Finish
    Anodized or Polished
  • Anodized Color
    Black or Silver
  • Clamp Size
    22.2mm and 31.8mm ↓

    22.2mm is equivalent to 7/8 inches, and is the diameter of most mountain bike handlebars. Many flat bars, risers and city bars have this diameter. It is measured at the end of the bar where grips and brake levers attach.

    31.8
    31.8mm is the clamp diameter of most handle bars and this size is designed for that section of a drop bar. The shifters are mounted on either side of the stem and are very easy and convenient to operate.

  • Compatible Shifters
    Shimano ↓

    Shimano bar end shifters work well with our Shimano style Thumbies. Many of their indexed downtube shifters will work as well, so long as they mount to a flat, not curved, shifter boss.

  • Additional Information
    Download

Product Story

Thumbies bring back the thumb shifting of old, and we think it makes shifting more precise and smoother. These feel much better in our opinion than trigger or twist shifters.

Thumbies have a hinged clamp for an easy installation and fit handlebars with a diameter of 22.2mm or 31.8mm. The 22.2 models fit mountain bike handlebars and the 31.8 mount to the stem clamp area of a drop bar. The clamp is raised up to give clearance for hydraulic brake levers.

They have a shifter mounting boss that fits Shimano bar end shifters and most Shimano downtube shifters, so long as they mount to a flat, not curved, shifter boss.

 

 

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📣The 2023 @lostandfoundbikeride registration is 📣The 2023 @lostandfoundbikeride registration is OPEN!📣
 🚵This is EPIC riding in some of the most beautiful areas of the #LostSierra. 🏕️Camping, live music, swimming, and partying with your friends, this is one of our favorite events of the year. 
⛏️Every penny raised by registration goes right back into building local trails and supporting the local mountain communities via @sierratrails .
🥓We’ll be there with our 🔥 Aid Station as usual. Paul himself will feed you pickles and bacon out on course. No, really!
📝LETS GOOOOOOO! 🎉
 📷: @johnprolly
We’ve been offering a front Flat Mount Adapter f We’ve been offering a front Flat Mount Adapter for a few years, so we figured it was about time to make a matching rear. 
  This adapter is +20mm, so good for putting a 160mm rotor on a 140 frame, and also helpful if you need a little more cable housing clearance at the chainstay. We aren’t usually weight-weenies, but after machining a pocket into these they end up at only 9 grams. 
  As usual, these are CNC’d by us to ultra-high tolerance right here in Chico, California. 
  Have a great weekend!
Canti Lever blades fresh out of the tumbler and re Canti Lever blades fresh out of the tumbler and ready for anodizing. As with all of our bearing press-fit features, we hold +/-0.0002” tolerance on these parts. That’s about 5 microns, and for comparison, the average human hair is about 70 microns thick. So yeah, these tolerances are TIGHT is what we’re saying!
Is this weird? Be honest. Is this weird? Be honest.
🚨NEW PAUL HOODIE ALERT🚨 We recently disco 🚨NEW PAUL HOODIE ALERT🚨 
  We recently discovered these absurdly cozy hoodies that are made here in the USA by Royal Apparel and tried a couple samples out and WOW. This is the closest thing to being gently hugged by the world’s softest teddy bear all day. 🧸 
  We just had a batch screenprinted with a giant red MotoLite brake and threw them on the website…LET’S CUDDLE! 
 (Oh yeah, Lucas is a BIRD NERD and no, we don’t know how that chair got broken.)
Going through a folder of photos by @johnprolly fr Going through a folder of photos by @johnprolly from 2018 and we are having some FEELINGS of EXCITEMENT that @downievilleclassic is BACK!🎉 This event is SO much more than a bike race, it’s a big family party with all your bike friends in some of the most beautiful rugged mountains in the #LostSierra. We’ll be bringing back our on-course aid station and breakfast tent downtown to support, and y’all wouldn’t believe how many pounds of bacon and coffee we go through on a weekend like this, it’s wild. Anyways, registration opened Sunday night and rumor has it the fields are filling up pretty quick, so don’t wait to pull the trigger on this, it is hands down the BEST mountain bike party in the USA!
Paul Component Engineering
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  • 530–345–4371
  • 11204 Midway
  • Chico, CA 95928
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