FSA Pro Road 39T Chainring
Pro Road 39T Chainring
FSA

FSA Pro Road 39T Chainring

In Stock

Lightweight FSA Pro Road 39T inner chainring for 10/11-speed double cranksets. 130mm 5‑bolt BCD, precision-machined aluminum with black finish for reliable shifting.

Add to Cart
🚚 Fast Shipping 🔒 Secure Checkout ↩ Easy Returns

Product Details

Overview & Technology

FSA Pro Road 39T is an inner chainring engineered for double road cranksets that demand precise, reliable shifting in a lightweight package. The ring is designed for 10- and 11-speed drivetrains, built on a 130mm, 5-bolt BCD pattern to fit a wide range of standard road cranks. The ring is precision machined from high-strength aluminum and finished in black to resist corrosion and wear while keeping mass low. The compact shipping footprint and 0.15 lb weight make it an ideal replacement or upgrade for riders who want crisp front shifts without adding rotational weight.

Key Features

Built for dependable front shifting: The Pro Road 39T features tight tolerances and a profile optimized for 10/11-speed chains to reduce chain drop and hesitation under load. The 5-bolt, 130mm BCD layout ensures secure mounting and broad crank compatibility. Durable, lightweight construction — CNC machining from aluminum delivers a strong but light ring that resists flex during hard efforts. The black finish looks clean on modern road groupsets and helps protect the aluminum surface from corrosion and abrasion.

Fit & Compatibility

This inner chainring is made for double chainring road cranksets using a 130mm, 5-bolt bolt circle diameter (BCD). It's specified for 10- and 11-speed drivetrains and intended as an inner ring (for the smaller position) — check that your crank uses the same 130 BCD spacing and bolt pattern before ordering. Because chainline and spacing differ between crank manufacturers, we recommend matching this ring to your existing FSA Pro Road outer ring or using manufacturer-specified ring pairs where possible. Standard road chainring bolts and torque values apply; confirm bolt length and thread engagement for your crankarm and spider assembly.

Who It's For

The FSA Pro Road 39T is ideal for road cyclists who run double cranksets and need a lightweight, reliable inner ring for training, racing, or long rides. It’s a popular choice for riders replacing worn rings, swapping gearing for flatter or hillier rides, or restoring factory spec performance on older cranks. Enthusiasts who value low weight, precise shifting, and a clean black aesthetic will appreciate this ring as a low-friction, cost-effective upgrade or spare part. Mechanics and home wrenchers will find the standard 5-bolt 130 BCD fit simplifies installation across many road crank models.

Key Features

  • ✓ 39 teeth inner ring optimized for 10- and 11-speed chainrings
  • ✓ Standard 130mm BCD, 5-bolt pattern fits many road cranksets
  • ✓ Precision CNC-machined aluminum for low weight and stiffness
  • ✓ Black anodized finish for corrosion resistance and clean aesthetics
  • ✓ Designed specifically as an inner ring for double crank configurations
  • ✓ Lightweight: approx. 0.15 lb — minimal rotational mass added
  • ✓ Manufacturer part #: 371-0139D, SKU/Product #: 390674

Specifications

BCD 130
Chainring Bolts 5
Chainring Comp. Double
Teeth 39
Material Aluminum
Position Inner
Primary Color Black
Speed 10/11

Product Identifiers

Vendor Item # 371-0139D
UPC 400310065759

Frequently Asked Questions

Will this ring work with my 11-speed Shimano crank?

Possibly — the Pro Road 39T uses a standard 130mm, 5-bolt BCD which is common on many road cranks. However, Shimano sometimes uses proprietary ramps and tooth profiling. For guaranteed optimal shifting, pair with compatible outer rings or confirm your crank's BCD and bolt pattern before buying.

Can I use this as an outer ring or on a single-ring setup?

No. This ring is made and profiled as an inner chainring for double cranksets. Tooth profiles, spacing, and shift ramps differ between inner and outer rings, so using it as an outer ring or in a single setup can compromise shifting and increase wear.

What chain speeds is this chainring compatible with?

The FSA Pro Road 39T is specified for 10- and 11-speed drivetrains. It is profiled to work reliably with those chain widths; using wider or narrower chains (e.g., 12-speed) may result in suboptimal shifts or increased wear.

Do I need special bolts to install this ring?

No special bolts are required beyond standard 5-bolt road chainring bolts. Make sure the bolts provide correct thread engagement and length for your crank spider and that you tighten to the manufacturer's recommended torque to avoid loosening or damage.

Should I replace both chainrings at the same time?

Not always — if the outer ring is still in good condition and matched to the same tooth profile and speed spec, you can replace only the inner ring. However, for best shifting performance, many mechanics recommend replacing rings as a matched pair if both show significant wear.

What maintenance extends the life of this aluminum ring?

Keep the drivetrain clean and adequately lubricated, avoid cross-chaining, and inspect teeth for burrs or hooking. Regular chain wear checks and replacing the chain before it excessively wears will prevent premature chainring damage and maintain crisp shifting.

Buying Guide

When buying an inner chainring for a road double crankset, first confirm the bolt circle diameter (BCD) and the bolt pattern—this FSA Pro Road ring uses a 130mm, 5-bolt layout that fits many standard road cranks. Next, match the ring to your drivetrain speed: this model is profiled for 10- and 11-speed chains. Consider replacing both rings if the outer ring shows wear or if you want guaranteed shift performance; otherwise a single inner ring replacement is cost-effective. Check bolt length and torque specs for your crank spider and choose a ring with compatible ramping and tooth profiles to preserve crisp, reliable front shifting.

Ready to order?

Shop with confidence at Scenders — premium cycling parts, fast shipping.

View Full Product