e*thirteen components

Frequently Asked Questions

• What makes e*thirteen components stand out from other MTB part makers?

  e*thirteen blends race-focused innovation and durable materials—examples include the Sidekick Hub to reduce pedal kickback, Helix cassettes with wide 9–52t gearing, and XCX Race carbon cranks for lightweight XC performance. Their parts use purpose-grade alloys (forged 6066‑T6 cranks, AL‑7075‑T651 cassette big cogs) and tuned hub/rim systems to balance weight, durability, and serviceability across enduro, eMTB, and XC use.
• What is the Sidekick Hub and how does it affect trail performance?

  The Sidekick Hub is a tunable hub design that reduces pedal kickback and improves rear-wheel traction and chain stability, especially on gnarly terrain and during eMTB acceleration. It’s designed to be serviceable and integrates with e*thirteen wheel systems to give predictable engagement and support aggressive riding styles without adding excessive weight.
• How do Helix Race and TRS+ cassettes differ, and which should I choose?

  Helix Race cassettes deliver the widest ranges like 9–52t for a 578% spread using AL‑7075‑T651 alloy big cogs and SCM445 steel smaller sprockets for longevity, while TRS+ offers slightly different sprocket spreads (9–46t or 9–52t) tuned for smooth shift transitions. Choose Helix Race if you want the maximum gear range and durability for enduro/eMTB; TRS+ can be a good balance for trail riders who prioritize shifting feel and lighter weight.
• Which e*thirteen cranks are best for XC versus enduro riding?

  For lightweight XC and race use, the XCX Race Carbon cranks (Gen4) prioritize low mass and stiffness, making them ideal for racers chasing every gram; a 170–175mm XCX setup with a 32T ring can be substantially lighter. The Helix Race Alloy cranks (forged 6066‑T6 with a 7050‑T7 spindle) are better for enduro and eMTB riders who want durable construction and impact resistance—expect higher mass but greater resilience for aggressive terrain.
• How should I choose e*thirteen wheels, rims, and hubs for eMTB or aggressive trail use?

  Prioritize aluminum or reinforced carbon rims paired with robust Sidekick or heavy-duty hubs for eMTB and aggressive enduro—these combos favor impact resistance and serviceability. Check manufacturing date codes (carbon: 11/13‑digit under the tape; aluminum: laser‑etched markings), match rim and hub choices to rider weight and terrain, and plan for more frequent servicing if you’re a heavier or highly aggressive rider.