Shimano

Frequently Asked Questions

• What is Shimano known for?

  Shimano is a Japanese component maker founded in 1921 in Sakai, Osaka. It is best known for bicycle drivetrains, brakes, wheels and pedals, and also makes cycling shoes and apparel.
• How are Shimano road groupsets tiered?

  From the top: Dura-Ace, Ultegra, 105, Tiagra, Sora and Claris, with GRX as the gravel-specific line. Higher tiers are lighter and more refined, and shift and brake function works the same way throughout.
• How are Shimano mountain bike groupsets tiered?

  XTR sits at the top, followed by Deore XT, SLX and Deore. Cues and older lines such as Alivio and Altus cover the more affordable end. Parts are generally designed to work within the same speed count across tiers.
• What is Shimano Di2?

  Di2 is Shimano's electronic shifting: the shifters send a signal and motorised derailleurs move the chain, powered by a rechargeable battery. It is offered on Dura-Ace, Ultegra and 105 road groups and on some mountain and e-bike groups. Keep the battery charged, since shifting stops when it runs flat.
• What is the difference between SPD and SPD-SL pedals?

  SPD uses a small two-bolt cleat recessed into the shoe sole, so you can walk normally; it is common for mountain biking, gravel and commuting. SPD-SL uses a larger three-bolt road cleat that gives a wider, stiffer platform but is awkward to walk in.