Shimano Tourney. There are also TY300 TY500 and TY700. The Revoshift shifter allows riders to maintain a secure and stable grip on the handlebar by requiring just a twist of the thumb and index finger for shifting.
Shimano Tourney is most famous for derailleurs both front and rear. Shimano Tourney SGS 67-Speed Mountain Bicycle Rear Derailleur - RD-TY300-SGS 67-SPEED WRIVETED ADAPTERBMX-TRACK. Schwinn Mens Ascension 29 Mountain Bike - Black.
Shimano Tourney Rear derailleur compatible with all Shimano 6 and 7 speed shifters.
Considered the most entry-level groupset in the Shimano MTB hierarchy this groupset is also used on hybrid and road bicycles. Shimano Tourney components use these model numbersranges primarily identifying the shifters and derailleurs. 67-Speed derailleurs are common in Tourney. SHIMANO TOURNEY Right Shift Lever 6-speed VIEW PRODUCT.