Brand

Shimano

Products from Shimano that we track, with our own notes on each.

Shimano products we track

E-Bike Brake Pads

Shimano B05S Resin Disc Brake Pads

The Shimano B-series resin pad (B01S, B03S, and the current B05S) fits the two-piston hydraulic calipers found on a huge number of commuter and entry-level mountain bikes, including many e-bikes with Shimano MT200, MT400 and Deore M6000-class brakes. Resin pads are quiet and have strong initial bite, which suits stop-and-go riding, but they wear quickly on heavy bikes in hilly areas. They are cheap enough to keep a spare set on hand. If your bike has four-piston Shimano calipers, you need the D-series pad instead.

Best for: E-bikes with Shimano MT200/MT400/MT500 and similar two-piston hydraulic calipers · Commuters who value quiet brakes · Quick, cheap pad replacement

View details & where to buy

Sold on Amazon

Brake Rotors

Shimano SM-RT56 180 mm 6-Bolt Disc Rotor

The SM-RT56 is Shimano's workhorse 6-bolt rotor, found on piles of entry and mid-level bikes and sold everywhere as a replacement. The 180 mm size is a good match for the front of a commuter e-bike and is what many 160 mm-equipped bikes upgrade to for more stopping power. One important detail: the RT56 is specified for resin pads only, so if you run sintered metallic pads you should choose a different rotor. It is a plain stamped steel rotor without a cooling fin or alloy carrier, which is exactly why it is inexpensive and durable.

Best for: Replacing a bent or worn 6-bolt rotor on an e-bike with resin pads · Upgrading a front brake from 160 to 180 mm (with a caliper adapter) · Riders who want a Shimano-quality rotor at a low price

View details & where to buy

Sold on Amazon

Hydraulic Brake Components

Shimano Hydraulic Disc Brake Mineral Oil, 100 ml

Shimano's own mineral oil is what goes in any Shimano hydraulic brake, and it is also commonly used by owners of Tektro and Magura brakes after checking compatibility. The 100 ml bottle is enough for several bleeds on a two-brake bike. The important thing to know is that mineral oil and DOT fluid are not interchangeable; putting DOT in a mineral-oil brake ruins the seals. If your levers say Shimano, Tektro or Magura they almost certainly take mineral oil, but read the lever cap. Keep the bottle sealed and away from heat.

Best for: Bleeding Shimano hydraulic brakes · Riders with Tektro or Magura mineral-oil systems who have confirmed compatibility · Anyone refreshing spongy brakes on an e-bike

View details & where to buy

Sold on Amazon

Cassettes

Shimano CS-HG200-7 7-Speed Cassette 12-32T

Many 7-speed e-bikes with a cassette freehub (rather than a thread-on freewheel) use this exact Shimano part or a close equivalent, and it is the cheapest genuine Shimano replacement. The 12-32 range gives a usable low gear for assisted climbing and a top gear that will not spin out at class-2 speeds. Cassettes wear together with chains, so if your chain is stretched, replace both. Before ordering, confirm that your rear hub is a freehub with a lockring and splines; if your cogs thread onto the hub, you need a freewheel instead.

Best for: 7-speed e-bikes with a Shimano-style freehub · Replacing a worn cassette alongside a new chain · Budget drivetrain refreshes

View details & where to buy

Sold on Amazon

Cassettes

Shimano CS-HG400-9 9-Speed Cassette 11-34T

Mid-priced e-bikes frequently ship with a 9-speed Shimano Alivio or Acera drivetrain, and the HG400-9 in 11-34 is the standard replacement cassette. The 34-tooth low gear is a real help on hills if you prefer to keep the assist low, and the 11-tooth top is enough for fast flats. It is an inexpensive, durable cassette and the right partner for an e-bike-rated 9-speed chain. As with any cassette swap, confirm you have a freehub body, and budget for a lockring tool and chain whip if you do not have them.

Best for: 9-speed Shimano-equipped e-bikes · Riders who want a lower climbing gear than stock · Drivetrain refreshes with a new chain

View details & where to buy

Sold on Amazon

FreewheelsFeatured

Shimano MF-TZ500 7-Speed Freewheel 14-28T

Most rear hub-motor e-bikes use a thread-on freewheel rather than a cassette, and the 7-speed Shimano MF-TZ500 (successor to the TZ-31) is the one that comes on a huge share of them. It screws onto the motor's threaded boss and comes off with a standard Shimano freewheel remover. The 14-28 range is conservative: fine for flat commuting and assisted riding, limiting if you want to pedal fast downhill. When the freewheel starts skipping or the pawls stick, replacing it is a cheap twenty-minute job if you have the tool.

Best for: 7-speed hub-motor e-bikes with a thread-on freewheel · Fixing a skipping or sticky freewheel · Like-for-like replacements

View details & where to buy

Sold on Amazon

Derailleurs

Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur

The Tourney TY300 is the derailleur on an enormous number of 7-speed e-bikes, and it is what you buy when the original gets bent by a fall or a stick. It is cheap, easy to set up, and available in a few mounting styles: a direct-mount version with a bracket (claw) for bikes without a hanger and a standard-hanger version. Before ordering, look at how your old derailleur attaches. It shifts fine for a 7-speed hub-motor bike and pairs with the stock thumb or trigger shifters; just expect to replace the cable at the same time.

Best for: 7-speed hub-motor e-bikes with a bent or broken derailleur · Budget like-for-like replacements · Riders who want a part that matches the stock shifter

View details & where to buy

Sold on Amazon

Derailleurs

Shimano Altus RD-M310 7/8-Speed Rear Derailleur

The Altus M310 is a step up from Tourney and the common derailleur on 8-speed e-bikes; it also works with 7-speed shifters, which makes it a popular upgrade when a TY300 dies. It mounts to a standard derailleur hanger (no claw version), handles up to a 34T cog, and shifts noticeably crisper than Tourney. It is still inexpensive. If your bike uses a direct-mount claw bracket, you will need an adapter or to stay with Tourney. Replace the shift cable at the same time and check the hanger alignment.

Best for: 8-speed e-bikes needing a replacement derailleur · 7-speed bikes with a standard hanger that want crisper shifting · Riders running a 34T low cog

View details & where to buy

Sold on Amazon

Derailleurs

Shimano SL-TX50 7-Speed Thumb Shifter (Right)

The SL-TX50 is the simple thumb shifter that comes on many 7-speed e-bikes, especially ones with a twist throttle on the right that leaves no room for a grip shifter. It is a right-hand, 7-click indexed shifter with an optical gear indicator, and it clamps onto a 22.2 mm bar. When the index gets sloppy or the lever breaks, this is the cheap, direct replacement. Shifters are sold with a cable, which you should install new; most shifting problems on budget e-bikes are cable friction rather than the shifter itself.

Best for: 7-speed e-bikes with a broken or worn thumb shifter · Bikes where a twist shifter conflicts with a twist throttle · Budget replacements

View details & where to buy

Sold on Amazon

Cranksets

Shimano BB-UN300 Square Taper Bottom Bracket

The UN300 is the sealed-cartridge square-taper bottom bracket Shimano sells as the successor to the long-running UN55 and UN26, and it is the right replacement for the creaking, gritty bottom bracket on most hub-motor e-bikes. It comes in several shell widths (68 and 73 mm are common) and spindle lengths, so you need to measure or read the old unit. Installation needs a splined bottom-bracket tool. Once in, it is a fit-and-forget part — which is exactly what you want on a commuter that gets ridden in the rain.

Best for: Fixing a creaking or loose bottom bracket on a square-taper bike · Pairing with a new square-taper crankset · Hub-motor e-bikes with standard threaded shells

View details & where to buy

Sold on Amazon