


Box One M30-M Cranks / Black
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Box One M30-M Cranks / BlackFeaturing beefy hollow forged crank arms and a massive 30 millimeter Praxis M 30 (28 30mm) spindle cold forged from 7075 aluminum and precision ground to extremely tight tolerances, the Vector M30 M Crankset is the absolute stiffest junior BMX crankset available today. A precision CNC machined chromoly alloy self extracting crank bolt system makes installation and removal a snap. The crankset has a 153mm Q Factor measurement. NOTE: This Crankset
Quick Dispatch:
Your Box One M30-M Cranks / Black orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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]
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4.3 ★★★★★
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Product Reviews
★★★★★ 4
Cute but not hinged at arms
Color: Porcini Tortoise, Size: 52-17-140
They were cute. I didn’t like that they weren’t hinged. They were harder to open and close. I didn’t look for this feature before I purchased.
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Reviewed in the United States on February 3, 2026
★★★★★ 5
Anteojos modernos.
Color: Blush Tortoise, Size: Lens-52 Bridge-17 B-37.5 ED-56.1 Temple-140, Color: Blush Tortoise, Size: Lens-52 Bridge-17 B-37.5 ED-56.1 Temple-140
Mis lentes son muy cómodos, y me gustan como lucen, vienen sin medidas yo los adecué con mi Optometrista.
Se aflojan con el tiempo, pero compré una pinza que ajusta los tornillos…realmente lucen como nuevos.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
The glasses are made well
Color: Pearl Brown Tort, Size: 53-16-135
The glasses fit well and are made well. They are Great value for the money.
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Reviewed in the United States on November 24, 2024
★★★★★ 5
Wonderful
Color: Blue Flake Tortoise, Size: Small
Beautiful glasses. I get many compliments
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Super
Color: Porcini Tortoise, Size: 52-17-140
Muy buenos les puse mi receta y los uso a diario
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Reviewed in the United States on May 3, 2026