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The Checkpoint ALR 4 and ALR 5 share the aluminium frame, fork, wheels and tyres. The groupset changes: 11-speed Shimano CUES on the ALR 4 and 12-speed SRAM Apex on the ALR 5.
| Checkpoint ALR 4 | Checkpoint ALR 5 | |
|---|---|---|
| Groupset | Shimano CUES | SRAM Apex XPLR |
| Gears | 11 | 12 |
| Cassette | Shimano CUES LG700, 11-50 | SRAM XPLR PG-1231, 11-44 |
| Rear derailleur | Shimano CUES U8000 GS | SRAM Apex XPLR |
| Chainring | 40 teeth | 40 teeth |
| Chain | Shimano LG500 | SRAM Apex, 12-speed |
| Brakes | Shimano CUES hydraulic disc | SRAM Apex hydraulic disc |
What they share
Frame, fork, Bontrager Paradigm 23 rims, Bontrager Girona Pro Tubeless Ready tyres, saddle and seatpost.
Which one to choose
ALR 4 if you ride routes with a lot of climbing or carry luggage: its 11-50 cassette gives an easier gear for going uphill. ALR 5 if you prefer smaller jumps between gears and the feel of a 12-speed SRAM groupset.
See also the comparison of every Trek Checkpoint, including the carbon versions.
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