Raceface Chester
Raceface

Raceface Chester

$35.99
In Stock

The RaceFace Chester is a forged 2014‑series aluminum threadless stem with a 31.8mm, 4‑bolt U‑shaped clamp, 8° rise and 40mm stack — built for precise, durable trail control.

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Product Details

Overview & technology

RaceFace Chester uses forged and blasted 2014 aluminum to deliver a high strength‑to‑weight structure with excellent fatigue resistance. The forging process aligns grain structure for durability under repeated trail impacts, while the blasted finish reduces surface stress risers and gives a rugged, low‑gloss appearance that hides scuffs from everyday use. The Chester's signature interlocking U‑shaped clamp geometry transfers loads through the stem body instead of relying solely on bolt clamping force. Combined with a four‑bolt face plate this design improves handlebar retention and reduces the chance of bolt pull‑through on hard hits — a tangible benefit when you push steeper, rougher terrain.

Key features

Built for control: 31.8mm handlebar clamp, 4‑bolt face plate and an 8° rise provide a predictable cockpit height and rock‑solid bar lock. A 40mm stack height keeps the front end low and responsive without sacrificing steering precision. Materials & construction: Forged 2014 aluminum construction delivers a balance of stiffness and impact resistance ideal for aggressive trail and all‑mountain use. The interlocking clamp geometry routes clamping forces through the stem body, not just the bolts, increasing long‑term reliability.

Fit & compatibility

The Chester is designed for 31.8mm handlebars and a 1‑1/8" straight steerer tube — the standard for many trail and hardtail/suspension forks. The listed stem length is 50mm with an 8° rise; RaceFace also offers other lengths (70mm referenced weight) — check the variant for exact sizing. Stack height is 40mm and the stem uses a 4‑bolt face plate. It will not clamp 35mm or other oversized bars without a shimming adaptor. For tapered steerer tubes, use an appropriate headset/spacer arrangement or an internal shim recommended by your frame or fork manufacturer.

Who it's for

The Chester is aimed at trail and all‑mountain riders who want a tough, reliable stem that balances weight and durability. Its forged 2014 aluminum construction and interlocking clamp design make it well suited to riders who push the limits — whether fast, rough singletrack or long days on technical terrain. If you ride aggressively but prefer a compact cockpit for quicker steering and better front‑wheel feel, the 50mm Chester offers precise handling without adding unnecessary weight or stack height.

Key Features

  • ✓ Forged 2014 aluminium for high strength and fatigue resistance
  • ✓ Interlocking U‑shaped clamp geometry transfers load through stem body
  • ✓ 4‑bolt faceplate provides even clamping and secure handlebar grip
  • ✓ 31.8mm bar clamp diameter fits standard trail and enduro bars
  • ✓ 8° rise gives a slightly upright feel without sacrificing precision
  • ✓ 40mm stack keeps cockpit low and responsive for technical terrain
  • ✓ Lightweight design — 171 g quoted for 70mm variant (shorter is lighter)

Specifications

Handlebar Diameter 31.8mm
Primary Color Black
Steerer Tube 1-1/8''
Stem Angle 8°
Face Plate Bolts 4
Stem Length 50mm
Stem Material Aluminum
Stack Height 40

Product Identifiers

Vendor Item # ST12CHE31.850X8BLK
UPC 821973195926

Frequently Asked Questions

What handlebar and steerer sizes does the Chester fit?

The Chester is made for 31.8mm handlebars and a 1‑1/8" straight steerer tube. It won't clamp 35mm oversized bars without an adapter, and tapered steerers may require a shim or compatible headset arrangement—confirm with your fork/frame specs before installation.

How does the interlocking U‑shaped clamp help on the trail?

The interlocking U‑shaped clamp routes clamping forces through the stem body rather than relying solely on bolt tension. That results in a stronger joint that is less prone to bolt pull‑through or deformation under hard impacts, giving more durable handlebar retention during aggressive riding.

What is the weight of this 50mm stem?

RaceFace quotes 171 g for the 70mm Chester. Shorter lengths such as the 50mm variant are lighter; exact weight varies by length. If precise grams matter to you, check RaceFace's spec sheet or contact Forest Bikes for a measured weight.

What torque should I use for the faceplate and steerer bolts?

Always follow the manufacturer's torque specs in the product manual. As a practical guideline, tighten faceplate bolts incrementally and evenly in a cross pattern, and use a calibrated torque wrench. If you don't have the manual, typical stem bolt torques fall in the mid single‑digit Nm range—consult RaceFace for exact values.

Is this stem suitable for enduro or downhill use?

The Chester's forged 2014 aluminum construction and robust clamp geometry make it very capable for trail and aggressive all‑mountain riding. For dedicated downhill or freeride use, riders often choose extra‑long or heavier‑duty gravity‑specific stems; evaluate your personal impact tolerance and local race rules before using any component in gravity racing.

Can I run dropper cable routing under the stem?

Yes — the Chester's design leaves typical cockpit space for most external dropper cables and remote housings. Cable routing will depend on your bar profile and clamp placement; plan routing and tighten the faceplate evenly to avoid pinching cables.

Buying Guide

When choosing a stem, consider length, rise/angle, clamp diameter and material. Shorter stems (40–50mm) quicken steering and improve front‑wheel feel for technical trails; longer stems (70mm+) stabilize high‑speed lines. The Chester's 8° rise and 50mm length suit riders who want a compact, responsive cockpit with a touch of upright posture. Match clamp diameter to your handlebars (31.8mm here) and ensure steerer compatibility (1‑1/8" for the Chester). Decide on forged aluminum for durability and impact resistance or carbon for vibration damping and weight savings; for aggressive trail and all‑mountain riding, forged aluminium like the Chester is a dependable choice.

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