• OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
  • OVERFAST AEROX carbon aero crank arm for triathlon and time trial
  • OVERFAST AEROX carbon aero crank arm for SRAM DUB and Shimano 24mm
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Overfast

OVERFAST AEROX Carbon Crankarm | SRAM DUB / Shimano Ti24mm | Aero Crank Arm for Triathlon and Time Trail

OVERFAST AEROX Carbon Crankarm | SRAM DUB / Shimano Ti24mm | Aero Crank Arm for Triathlon and Time Trail

$699.00 SGD
$699.00 SGD
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Shipping calculated at checkout.
Bottom Bracket Type
Crankarm Length
Spider Option

Aero? Lightweight? Why not both.
Trusted & proved by professional triathlon podium winner Sam Laidlow and set new world-record time of 7:21:03 in Challenge Roth,

and chosen by lizzie Riayner at IRONMAN 70.3 Swansea in Wales 2026 with podium.

Aero Carbon Crankarms | 315g (Ti24) / 325g (DUB/Ti24 GR) ±15g | EASTON/SRM-compatible spider interface

44mm chainline | 155 to 172.5mm in 8 lengths

Three axle variants: DUB (28.99mm), Ti24 (24mm road), Ti24 GR (24mm Glossy Rolls)

The Aerox is Overfast's aero-focused crankarm, sitting alongside the Vela in their lineup with an emphasis on aerodynamic shaping (though only 25g heavier than the Vela).

Keeping the carbon construction of all Overfast products, the arm length range extends lower than the Vela (from 155mm to 172.5mm in 8 steps). This makes it a better option for smaller/junior riders.

All three variants share the same EASTON/SRM-compatible spider interface and 44mm chainline as the Vela, so chainring and spider power meter options are identical across both crankarm models.

Variants at a Glance

Variant Axle Q-Factor Weight Intended Use
Aerox Crankarm DUB 28.99mm (SRAM DUB) 147mm 325g ±15g Road, compatible with SRAM DUB groupsets
Aerox Crankarm Ti24 24mm 148mm 315g ±15g Shimano
Aerox Crankarm Ti24 GR Glossy Rolls 24mm 148mm 325g ±15g Shimano

Features

Aero-Shaped Aluminium Construction

The Aerox uses an aerodynamically profiled carbon, prioritising drag reduction and stiffness. The aero shaping is most relevant for riders spending time at higher speeds where crank arm drag is a measurable factor, including TT-adjacent road riding and triathlon.

EASTON or SRM-Compatible Spider Interface

The Aerox uses the same EASTON-compatible spider interface as the Vela, giving it broad compatibility with EASTON-pattern chainrings and third-party spider power meters including XCADEY power meters. The SRM version is also available at an additional cost, with no change to geometry or chainline.

Eight Arm Length Options from 155mm

Eight arm lengths run from 155mm to 172.5mm, with the 155mm and 157.5mm options extending the range lower than the Vela. For smaller riders or those prescribed shorter cranks through bike fitting, this is a practical advantage that most aftermarket crankarms do not offer.

DUB and 24mm Axle Variants

The DUB variant uses a 28.99mm axle for direct compatibility with SRAM DUB bottom brackets. The Ti24 and Ti24 GR Glossy Rolls variants use a standard 24mm axle, compatible with a wide range of road and gravel bottom bracket standards. 

Specifications

Variants DUB / Ti24 / Ti24 GR Glossy Rolls
Axle Diameter 28.99mm (DUB) / 24mm (Ti24 / Ti24 GR)
Q-Factor 148mm (all variants)
Chainline 44mm (all variants)
Spider Interface EASTON / SRM Compatible
Weight (DUB) 325g ±15g
Weight (Ti24) 315g ±15g
Weight (Ti24 GR) 325g ±15g

What's Included?

  • 1 pair of Overfast Aerox Aero Crankarms

Links

Overfast Vela (Lightweight) Version: click here.

All Overfast products: click here.

All cranksets and crankarms: click here.

Warranty Information

Warranty Coverage

All Overfast products are covered by a 2-year warranty against manufacturing defects. This warranty does not cover damage caused by misuse, accidents, crashes, improper installation, modification, or normal wear and tear.

Warranty Claims

To process a warranty claim, customers must provide clear photos and/or videos showing the issue. Once the claim has been reviewed and confirmed by Overfast, replacement parts will be arranged as quickly as possible.

Thru-Axles

For defective thru axles, please provide clear photos or videos of the affected product. Once the defect has been verified, a replacement will be shipped promptly.

Cranksets

If a crank arm suffers a confirmed manufacturing defect (non-user-related), please provide detailed photos and a description of the issue.

After approval:

- The defective crank arm must be permanently destroyed (for example, by drilling a hole through it).
- Evidence of destruction must be submitted.
- If only one crank arm is defective, only the affected side will be replaced.

Once the above requirements are met, the replacement will be arranged immediately.

Wheelsets

Warranty service for wheelsets depends on the specific component that has failed. After inspection, Overfast will provide the appropriate replacement part or component based on the confirmed issue.

Other Products

The same warranty process applies to all other Overfast products. As long as sufficient evidence is provided to verify a manufacturing defect, warranty claims will be prioritised and processed promptly.

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Crash Replacement Programme

For products damaged due to crashes, accidents, or other user-related incidents, Overfast offers a Crash Replacement Programme.

Eligible customers may purchase a replacement product at 30% off the recommended retail price (70% of MSRP).

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Notes

- All warranty claims are subject to inspection and approval by Overfast.
- Clear photos, videos, and any other requested documentation may be required before a claim can be approved.
- Overfast reserves the right to determine whether a claim qualifies under the warranty or the Crash Replacement Programme.

Returns & Refund Information

We want you to be fully satisfied with your purchase. However, please note that returns and refunds are only accepted for genuine product quality issues, such as cracks or structural breaks.

Issues such as creaking or noise are generally the result of improper installation and are not considered product defects.

Not Eligible for Return or Refund

Returns will not be accepted under the following conditions:

  • Improper installation or use
  • Normal wear, surface marks, or cosmetic blemishes
  • Damage caused by misuse, over-torque, or accidents
  • Any modification or alteration of the product
  • Products showing signs of use (including clamp or installation marks)

Returns Due to Wrong Model Ordered

If the incorrect model was ordered by you:

  • You are responsible for all return shipping costs.
  • Once we've received your return, we will refund you the purchase amount less:
    • a) Payment gateway fee of 7% (this is what our credit card company charges us)
    • b) Shipping costs, even if you received "free shipping", as we subsidise shipping at our own expense.

Additional Notes

  • Returned items must be in unused, original condition and complete with all packaging.
  • Products showing any signs of installation or use will not be eligible for return.
  • If reshipping is required, the reshipping fee will be borne by the buyer.
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