ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 32T, 13mm Offset, Bronze

ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 32T, 13mm Offset, Bronze

Marsoni

M251S

$198.00

Get it in 3 business days with 1 day shipping. Friday, May 29

ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 32T, 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 32T 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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I used this to change the oil on my BMW M8 with the S63 engine. It was a perfect fit. It extended far enough onto the filter housing to be quite secure with no risk of slipping off and stripping the housing. It was snug on the housing and did not bind up due to having a loose fit. The tool feels well-built and I suspect it will outlive me given my occasional personal use. It would still probably hold up well even for daily shop use as long as it was not abused (repeatedly dropped, slammed around, etc).

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Reviewed in the United States on September 8, 2025