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Ships within 48 hours · Estimated delivery Jul 3 - Jul 8
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Description
trek gravel bike 2021 Trek Checkpoint ALR 4 – Gear WestCheckpoint ALR 4 is a high value gravel bike ready for the roads less traveled. Kitted out with a 300 Series Alpha Aluminum frame, Checkpoint ALR 4 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Tons of features like tubeless ready wheels, a SRAM Apex 11 speed drivetrain, and mechanical disc brakes make Checkpoint ALR 4 the perfect ride for ease of entry into the wide world of gravel. Features: Frameset Frame: 300 Series
Checkpoint ALR 4 is a high-value gravel bike ready for the roads less traveled. Kitted out with a 300 Series Alpha Aluminum frame, Checkpoint ALR 4 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Tons of features like tubeless ready wheels, a SRAM Apex 11-speed drivetrain, and mechanical disc brakes make Checkpoint ALR 4 the perfect ride for ease of entry into the wide world of gravel.
Features:
- Frameset
- Frame: 300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle
- Fork: Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle.
- Weight
- 56 - 9.91 kg / 21.85 lbs (with TLR sealant, no tubes)
- This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
- Drivetrain
- Shifter: SRAM Apex, 11 speed
- Rear Derailleur: SRAM Apex 1, long cage, 42T max cog
-
Crank:
- Size 49: SRAM Apex 1, 40T, DUB Wide, 165mm length
- Size 52: SRAM Apex 1, 40T, DUB Wide, 170mm length
- Size 54, 56: SRAM Apex 1, 40T, DUB Wide, 172.5mm length
- Size 58, 61: SRAM Apex 1, 40T, DUB Wide, 175mm length
- Bottom Bracket: SRAM DUB, T47 threaded, internal bearing
- Cassette: SRAM PG-1130, 11-42, 11 speed
- Chain: SRAM PC-1130, 11 speed
- Max Chainring Size: 1x: 44T (SRAM), 50T (Shimano), 2x: 50/34
- Wheels
- Front Hub: Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
- Front Skewer: Bontrager Switch thru axle, removable lever
- Rear Hub: Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
- Rear Skewer: Bontrager Switch thru axle, removable lever
- Rim: Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve
- Spokes: 14g stainless steel, black
- Tire: Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40mm, Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42mm
- Rim Strip: Bontrager TLR
- Components
- Saddle: Size 49, 52: Bontrager Verse Comp, steel rails, 155mm width
- Saddle: Size 54, 56, 58, 61: Bontrager Verse Comp, steel rails, 145mm width
- Seatpost: Bontrager alloy, 27.2mm, 12mm offset, 330mm length
-
Handlebar
- Size 49: Bontrager Elite Gravel, 38cm width
- Size 52: Bontrager Elite Gravel, 40cm width
- Size 54, 56: Bontrager Elite Gravel, 42cm width
- Size 58, 61: Bontrager Elite Gravel, 44cm width
- Handlebar Tape: Bontrager Supertack Perf Tape
-
Stem
- Size 49: Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length
- Size 49: Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 70mm length
- Size 52, 54: Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length
- Size 56, 58: Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length
- Size 61: Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length
- Brake: Tektro C550 mechanical disc brake, dual piston, flat mount
- Brake Rotor: Tektro, centerlock, 160mm
- Rotor Size: Max brake rotor sizes: 160mm front & rear
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
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Product Reviews
★★★★★ 5
Perfect replacement wipers
Size: 26"+14"+10-1(PTB)
These are fantastic and fit my car perfectly. I was a little worried but they went on easily and were the perfect replacement. They fit against the glass and don't cause any smearing. I was thrilled to get them so quickly because we had another storm coming and these worked fantastically. I can see out of my windshield. If you're on the fence about these, go ahead and order, they work great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
★★★★★ 5
Great replacement wiper blades.
Size: 26"+17"+12JP(HOOK)
These were great wiper replacement for my car, very easy to install and way cheaper that buying them at a auto parts store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Impressive performance at an impressive price
Size: 26"+17"+14BP(HOOK)
I had one damaged wiper, so I decided to replace all 3 on my Subaru Outback. I have read a lot of positive information regarding "silicone" wipers, so I settled on this complete kit as it was a good value for the price and received many positive reviews.
They come well packaged, yet I was concerned that the longest blade had to be bent significantly to fit in the odd shaped box. However, once installed, that blade straightened out and conformed snuggly to the contour of the windshield.
True to the claim, it does take about 30 seconds to install each blade (that is if you understand the diagram and attempt to do so correctly). I had no issues and each blade snapped securely in place. They appear to be well made and durable. The design is clean and they look good on my vehicle.
I've been using them for 2 months now and they work well. They clear the windshield without streaking or chatter. They seem to work as well as other types I have used. The ultimate test will be how long they last. So far, I am very pleased with my choice.
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Reviewed in the United States on April 21, 2026
★★★★★ 4
Easy Installation Wipers!
Size: 26"+19"+14BP(HOOK)
Just installed them on my Outback, simple straightforward install. The instructions were simple and they seem to fit well. These wipers were more compatible than the old ones, and the appearance look like they are original!
When I purchased these wipers I thought I had purchased the Rain-X wiper replacements, but they were not. These wipers seem to work when I used the windshield cleaner with the wipers. The windshield cleaning seems effortless and without any noise.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Great Wiper Blades, Great Price
Size: 26"+18"+16BP(D-PTB)
Perfect fit for my 2020 Subaru Outback. The blades were very well packaged and arrived in perfect condition. They clean perfectly. I have only been using them for a month, so I can’t speak to longevity. They cost less than one third the premium blades cost at the auto parts store, and work just as well.
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Reviewed in the United States on May 8, 2026