ethirteen Helix R Chainring - 28t, 11/12-Speed, 52/55mm Flip Flop CL, 3.5mm Offset, ethirteen DM, Black

MPN: CR4HRA-140 · UPC: 4711280340897

$72.95

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🏪 Free pickup: 26 Essex St (Rear), Andover MA · 978-270-4895

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e*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.

✓ Direct Mount design for use with Helix cranks, adjustable chainline TRS/LG1 cranks, and XCX Race cranks
✓ M4 narrow-wide tooth profile provides Shimano and SRAM 11/12-speed chain compatibility, excellent chain retention, and reduced wear
✓ Convenient flip-flop design, compatible with both Boost and SuperBoost chainlines (52/55mm)
✓ e*thirteen's Quick Connect direct mount interface keeps the system secure and creak-free
✓ Forged from premium 7075-T7 aluminum, then extensively CNC optimized for light weight, and technical aesthetics
✓ Durable 7075-T6 construction for long wear-life, stiffness, and strength

Tooth Count	28
Drivetrain Speeds	12
Round or Oval	Round
Offset	3.5
Material	Aluminum
Color	Black
Weight	43
Defined Color	Black
Direct Mount Type	Direct Mount e*Thirteen