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ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 34T, 13mm Offset, Bronze

Marsoni M251S
Sale price$198.00
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Get it in 3 business days with 1 day shipping. Friday, May 29
ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 34T, 13mm Offset, BronzeThe ethirteen Helix Race espec Direct Mount Chainring is the ultimate premium upgrade for high performance Bosch e bike systems. Forged and CNC machined from ultralight, high strength 7075 T6 aluminum, this 34T one piece direct mount chainring features a 13mm offset to achieve perfect chainline alignment on Bosch CX Gen 4, Gen 5, and SX motors. Equipped with an updated M4 narrow wide tooth profile and finished in a striking bronze anodizing, it
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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.
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4.9 ★★★★★
Based on 1435 reviews
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Verified Purchase
Lindsey
Lexington, US
★★★★★ 5
Good for kids
Color: Blue+red
A little powerful for my 8 year old at first but after he got the hang of it, he loves using it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
J
Verified Purchase
Jennifer Faber
Massapequa, US
★★★★★ 5
Great for dental appliances
Color: Pink+purple
My daughter has a dental appliance that can get food caught in it. We were told to try a water flosser to get the trapped food out. This has done exactly that. Very happy with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Fun new way of flossing.
Color: Blue+red
My 7 year old loves it and it works really well. He’s excited about teeth brushing time again accompanied by water flosser and it can be used in the shower!
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Reviewed in the United States on March 19, 2026
P
Verified Purchase
pbadia
San Leandro, US
★★★★★ 5
Just as described
Color: Blue+red
Just as described. Quick shipping
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Reviewed in the United States on April 4, 2026
A
Verified Purchase
Ashlee M.
West Palm Beach, US
★★★★★ 3
Leaks
Color: Blue+red
Water leaks out of the button you press to change out the head so we will be sending back. Other than that it would be perfect, I’m sure it’s just a fluke thing.
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Reviewed in the United States on June 1, 2026

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