


ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 34T, 15mm Offset, Sterling Silve
Marsoni
M251S
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, 15mm Offset, Sterling SilveThe 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 wider 15mm offset to achieve proper chainline alignment on specialized Bosch CX Gen 4, Gen 5, and SX motor configurations. Equipped with an updated M4 narrow wide tooth profile and finished in a
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Your ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 34T, 15mm Offset, Sterling Silve orders ship within 1-2 business days.
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Reviewed in the United States on April 7, 2025
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Reviewed in the United States on August 13, 2025
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Accurate size, okay quality
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Size is accurate. Color is nice. Quality is not too bad especially for the price. Nephew seems to like it :)
CON:
Quality can be better. The hood is very light and thin but other than that it’s good for the price.
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