{"product_id":"helix-r-e-thirteen-direct-mount-chainring","title":"Helix R e*thirteen Direct Mount Chainring","description":"\u003cp\u003ee*thirteen Helix R Direct Mount Chainrings, manufactured from durable AL-7075-T6, combine aesthetics and design efficiency. Their flip-flop design accommodates Boost or Super Boost chainlines. With e*thirteen's narrow-wide tooth profile, they ensure enhanced chain retention, reduced wear, and compatibility with Shimano and SRAM chains. Perfectly complementing all Helix Cranks, they're backward compatible with e*thirteen TRS, LG1, and XCX Race cranks.\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eDirect Mount design for use with Helix cranks, adjustable chainline TRS\/LG1 cranks, and XCX Race cranks\u003c\/li\u003e\n\u003cli\u003eM4 narrow-wide tooth profile provides Shimano and SRAM 11\/12-speed chain compatibility, excellent chain retention, and reduced wear\u003c\/li\u003e\n\u003cli\u003eConvenient flip-flop design, compatible with both Boost and SuperBoost chainlines (52\/55mm)\u003c\/li\u003e\n\u003cli\u003ee*thirteen's Quick Connect direct mount interface keeps the system secure and creak-free\u003c\/li\u003e\n\u003cli\u003eForged from premium 7075-T7 aluminum, then extensively CNC optimized for light weight, and technical aesthetics\u003c\/li\u003e\n\u003cli\u003eDurable 7075-T6 construction for long wear-life, stiffness, and strength\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"e*thirteen","offers":[{"title":"Helix R Chainring - 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