FSA Super Road 46T Chainring
FSA

FSA Super Road 46T Chainring

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Lightweight CNC-machined aluminum 46T outer chainring for road doubles, 110mm 5-bolt BCD and optimized for 10/11-speed chains. Delivers crisp shifting, reliable fitment, and a durable black finish.

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Product Details

Overview & Technology

FSA Super Road 46T Chainring (Part #371-0246A, Prod. #390665) is a precision outer chainring designed for road double cranksets with a 110mm 5-bolt BCD. Built in aluminum with a black finish, this 46-tooth ring is optimized for modern 10- and 11-speed drivetrains and intended to replace or upgrade the outer ring on compatible road doubles. The ring is CNC-machined for consistent tooth profiles and accurate indexing, which helps deliver faster, more reliable shifts under load. At roughly 0.3 lb (shipping dims 9.2" x 9.2" x 0.3"), it balances low weight with durable construction so you get responsive pedalling and long service life.

Key Features & Benefits

Performance-driven features: the 46T tooth count raises your top-end gearing for sustained high-speed riding and group efforts, while the outer position tooth profile is tuned for clean chain pickup and downshifts from the big ring. The 110mm, 5-bolt pattern is a common road standard that fits many compact and semi-compact crank arms. Real-world benefits: • Lightweight aluminum construction keeps rotational mass low for quicker acceleration. • Precisely machined teeth improve shift crispness and reduce chain bounce under power. • Black anodized finish resists corrosion and hides minor wear for longer aesthetic life.

Fit, Compatibility & Installation

This chainring is made for road double cranksets using a 110mm 5-bolt BCD and is intended as the outer chainring. It supports 10- and 11-speed chains — if you ride 9-speed or wider-range systems, check chain engagement and shifting performance before committing. The ring will fit most 110 BCD cranks from major manufacturers, but always verify bolt circle diameter and bolt spacing. Installation is straightforward with standard 5-bolt chainring bolts. Inspect the direction/markings (outer position) before mounting, follow your crank maker's torque specs (typically in the 8–12 Nm range), and recheck chainline, derailleur adjustment, and chain length after swapping tooth counts.

Who It's For

The FSA Super Road 46T is aimed at road riders who want a higher top gear for fast group rides, flat-stage efforts, or commuters seeking a bit more speed. It's also a direct replacement for riders whose outer ring is worn or damaged and who prefer an OEM-level fit and finish. Choose this ring if you run a 110 BCD road double, use a 10- or 11-speed drivetrain, and want reliable shifting with a lightweight aluminum outer ring that looks clean in black.

Key Features

  • ✓ 46-tooth outer chainring for higher top-end road gearing and speed
  • ✓ 110mm 5-bolt BCD fits most compact/semi-compact road cranksets
  • ✓ CNC-machined aluminum construction for precise tooth profiling
  • ✓ Optimized for 10- and 11-speed drivetrains, reliable shifting performance
  • ✓ Black anodized finish for corrosion resistance and clean aesthetics
  • ✓ Lightweight — approximately 0.3 lb shipping weight, low rotational mass
  • ✓ Direct replacement part (Manufacturer PN 371-0246A, Product #390665)

Specifications

BCD 110
Chainring Bolts 5
Chainring Comp. Double
Teeth 46
Material Aluminum
Position Outer
Primary Color Black
Speed 10/11

Product Identifiers

Vendor Item # 371-0246A
UPC 400310060891

Frequently Asked Questions

Will this chainring fit my crankset?

This ring fits cranksets that use a 110mm, 5-bolt BCD and accept an outer chainring for road doubles. Verify your crank's BCD and bolt pattern before purchasing. If your crank uses a different BCD (for example 130mm or asymmetric designs), this ring will not be compatible.

Is the FSA Super Road 46T compatible with 10-speed and 11-speed chains?

Yes — the ring is designed for 10- and 11-speed drivetrains. It may not shift optimally with 9-speed or mixed-speed systems, so inspect shifting performance after installation and consider chain replacement if you notice inconsistent engagement.

Does the chainring come with chainring bolts or spacers?

No, the product is the outer chainring only. Use your existing 5-bolt chainring bolts or purchase compatible bolts separately. If your crank requires spacers or a specific bolt length, make sure to have those on hand for correct installation.

How should I set torque when installing the chainring?

Follow your crank manufacturer’s recommended torque specs; many road cranksets recommend bolt torque in the ~8–12 Nm range. Tighten bolts evenly in a star pattern to prevent warping and recheck after a short ride.

How will changing to a 46T outer ring affect my bike?

Moving to a 46T outer increases your top-end gear, giving higher gear inches for faster speeds on flats and descents. It may require slight front derailleur adjustment and possibly a longer chain depending on your current setup and inner ring size.

How do I know when the chainring needs replacing?

Look for hooked or shark-tooth shaped teeth, excessive chain skip under load, or noisy shifting. If your chain and cassette are also worn, replace them in matched sets to restore smooth component life and shifting performance.

Buying Guide

When choosing a replacement outer chainring, start with BCD and bolt count — this FSA Super Road ring uses a 110mm 5-bolt pattern, the most common size for compact and semi-compact road double cranks. Pick a tooth count that matches your riding: 46T suits riders who want a slightly higher top gear compared with more common 50/34 or 52/36 setups. Match the chainring to your drivetrain speed (this ring is for 10/11-speed), and consider replacing worn chains and cassettes at the same time to preserve shifting performance. Aluminum rings offer a good balance of weight, durability, and cost for most road riders seeking a responsive yet affordable upgrade.

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