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Description
good crankset for fixed gear Retrospec Mantra Fixed-Gear/Single-Speed Crankset – SGV BicyclesHere is the Mantra Crankset. This upgraded three piece crankset is made of a lightweight alloy crank combined with a steel chainwheel for superior strength and a smooth cadence every ride. Its better forged, which means the material is denser and stronger but still lighter than steel. With this beefier crankset, you get more power to the ground, which means youre going faster with less deflection. The thicker arm and different bolt pattern featured on
The Details
The crank arm measures 170mm and doesn’t have any overlap of crank arm and chainring bolts. The standard bolt circle diameter (or BCD) is 130mm. It accommodates 9/16” pedals.
Ride Like You Want To
Available in a ton of colors and sizes, you can pick the right choice for you and your bike. A smaller size will make accelerating simpler while a larger size will increase your highest speed.
Specifications
- Three-piece forged aluminum crankset
- All new crank arm design is much stronger for faster, more aggressive riding
- Fits on road, mountain fixies, BMX, track, and single-speed bikes
- 170mm Crank Arm Length without any overlap of crank arm & chainring bolts
- Standard Bolt Circle Diameter (BCD): 130mm
- Fits 9/16" pedals
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4.1 ★★★★★
Based on 480 reviews
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Product Reviews
★★★★★ 2
Great films, but quite flimsy box set
I would give it 4/5 if Criterion had made it more sturdy. It arrived in a plastic bag and was all beaten up. (Only Amazon could screw up a shipment this badly.) The short film "Les Mistons" has major gamma issues, which takes away one star.
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Reviewed in the United States on August 4, 2025
★★★★★ 1
Great transfer of a classic set -- except borked Les mistons
A really nice set of one of French cinema's greatest "franchises" -- though we did not call them that back then.
The tone shifts after the 400 blows of course. But it sort of makes sense, too, as things change for the character as well.
But beware, Criterion failed to grade the Les mistons short film correctly. Looks a lot like HDR/SDR gamma was switched or something similar. You can see it from the opening studio logo and credits which are not the right color. Hopefully they will issue a fix. Until then you may want to wait.
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Reviewed in the United States on July 21, 2025
★★★★★ 5
Some of Truffaut's greatest works... and they're wonderful
A reviewer here called these a "waste of time" and "weird movies," giving the set 1 star. Sorry, pal, maybe critically acclaimed films by one of France's--or the world's--most important filmmakers isn't your thing. Nothing "weird" about these very accessible, realistic movies about human beings and life. Truffaut did with this series over a course of 20 years what Richard Linklater did in one movie ("Boyhood")... but between 1959 - 1979, Truffaut's attempt was more ambitious, daring, and envelope-pushing. Lead actor Jean-Pierre Leaud goes from a 14 year old to a guy in his 30s, and he's wonderful in every episode. Each film is touching, funny, dramatic, and worth seeing for anyone interested in world cinema. "The 400 Blows" is Truffaut's debut feature, and what a great one it is. It's more serious than the others in this series, and is likely the most lauded. "Antoine & Colette" is a short film made 2-3 years later. "Stolen Kisses" gets more into comedy and it's a delight. "Bed and Board" continues where the previous one left off. "Love on the Run" is decidedly the weakest but is still enjoyable. Truffaut died too young five years after that one was made. One wonders if he and Leaud might have made another entry in the late 80s or even the 90s. Great stuff.
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Reviewed in the United States on July 14, 2025
★★★★★ 5
What a Fantastic Release on 4k/BD by Criterion!
I have enjoyed my DVD set of these great Truffaut for years, and am so happy to see this 4K set about to be released. Will be ordering this and looking forward to it. There are copious extras, a booklet, and the full set of Doinel films, including Antoine and Colette.
The first film in the series, THE 400 BLOWS, is considered one of the greatest films of French cinema, and of the Nouvelle Vague (New Wave). It's by turns entertaining, funny, thought-provoking, and heartbreaking. That movie and BED AND BOARD, a domestic comedy that is truly funny, are my favorites. But all the movies here are worth seeing and owning. Criterion rocks.
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Reviewed in the United States on July 10, 2025
★★★★★ 5
Be adventurous
Don’t pay attention to that other review. I’ve actually watched all of the Antoine Dionel films and they’re excellent. The 400 Blows is possibly Truffaut’s best. I can’t wait to receive my pre-ordered set of these great films. I hope Jules and Jim hits 4K soon. If you enjoy foreign films but haven’t seen these, you owe it to yourself to at least stream them. If you love them like I do, investing in this set is a no-brainer.
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Reviewed in the United States on July 10, 2025