As we speak, Shimano rolls out a brand new highway drivetrain that focuses on efficiency and affordability. The Tiagra R4000 Sequence is a 2×11 mechanical drivetrain that includes a brand new cassette, an ergonomic lever design, and different new options.
And whereas Shimano introduces this new system right now, it’ll say goodbye (ultimately) to the Tiagra 4700 10-speed drivetrain.
Shimano Tiagra R4000 Particulars
With the brand new Tiagra R4000, Shimano offered the fashionable efficiency roadies are in search of. Together with improved efficiency, it additionally hits the worth factors they needed and saved about 200g alongside the way in which.
Cassette (CS-RS400-11) and chain (CN-HG601-11)
New on this drivetrain group is an 11-36T, 11-speed cassette that boasts a 327% gear vary. Paired with a number of chainring choices, this Hyperglide cassette means that you can discover the wanted gear ratio for the whole lot from stout sprints to steep climbs.
You probably have a number of new chains mendacity round from the pandemic days, don’t fear, you possibly can nonetheless use them. Shimano carried over the HG-X11 course chain from earlier drivetrains because it shifts constantly effectively and is sturdy due to Shimano’s SIL-TEC remedy.
Crankset (FC-R4000)
Shimano affords two chainring pairings and a number of crank lengths for the brand new Tiagra crankset. First, the chainrings are supplied in a 52-36T combo, or 50-34T. Then, the crank arms range in size with 165, 170, 172.5, and 175mm choices.
Entrance derailleur (FD-R4000)
Lighter and smoother entrance shifting is promised with the brand new entrance derailleur. The Tiagra 11-speed entrance derailleur options Shimano’s toggle-link building and an optimized cage design, delivering exact, pure shifting efficiency.
Rear derailleur (RD-R4000)
Optimized and designed particularly for two×11-speed highway efficiency, the Tiagra rear derailleur delivers crisp, exact shifts. It’s compact and light-weight, however extra importantly, dependable for easy shifting.
Twin management levers/shifters (ST-R4020-L / ST-R4020-R)
Utilizing the superior ergonomics from their 105 Sequence levers, Shimano constructed the brand new Tiagra levers from the bottom up. The twin management levers present constant brake really feel and crisp shifting. A redesigned lever place and bracket present the consolation, management, and confidence wanted on a protracted journey.
Tiagra R4000 Compatibility
Here’s what Shimano desires you to know earlier than you click on “purchase” on the brand new Tiagra R4000 drivetrain.
“To assist constant shifting efficiency, body and drivetrain compatibility ought to meet the next targets:
Chain: Shimano 11-speed-compatible chain (CN-HG601-11 and CN-LG500 specified for the sequence)
Rear hub spacing (O.L.D.): 135–142 mm
Chainstay size: from 410 mm
Chainline: 43.5 mm (according to trendy highway front-shifting targets)
Pitch Circle Diameter (PCD): 110 mm (for the desired crank platform)
Entrance derailleur clearance: corresponding to FD-R7000-type match issues (trendy disc-road-oriented cage/clearance method)
Entrance chainring clearance: corresponding to FC-RS510-type chainring/crank match expectations
Freehub interface: HYPERGLIDE (HG) Spline M and HG Spline L (with 1.85mm spacer) (11/12-speed).”
The brand new Tiagra R4000 sits simply above Shimano Cues U6030 and 105 R7000. Pricing is as follows:
Rear derailleur: $70
Entrance derailleur: $55
Crankset: $160
Levers: $240 every
Cassette: $70
Shimano mentioned they count on to section out the older 10-speed Tiagra drivetrain by early 2027. See all the small print at bike.shimano.com.
