RST x D3O Racing Chest Protector | 103680

When the certified protection level you wear on track is the one detail you refuse to compromise, the RST x D3O Racing Chest Protector (part no. 103680) answers with the highest certified impact protection available in motorcycle safety — delivered in a low-profile form that disappears inside a race suit without restricting your riding position.

Key Features

• D3O impact technology offers class-leading certified protection: soft and flexible in normal use, instantly hardening on impact to absorb and disperse energy where it matters most
• Extended coverage across the sternum and ribs — protecting the areas most vulnerable in a racing fall, not just the centre of the chest
• Adjustable polycarbonate shell layers the protective architecture for an additional barrier against abrasion and penetration forces
• Low-profile dynamic fit sits flush against the body, integrating cleanly into race suits and leather one-pieces without unwanted bulk or movement
• Lightweight construction keeps fatigue low during long track sessions and lets you stay focused on the riding, not the gear
• Purpose-engineered for racing, trackdays, and high-performance road riding where every piece of protection must earn its place

Certified Safety at the Core

The defining characteristic of the RST x D3O Racing Chest Protector is its certified protection standard. In a market where chest armour varies enormously in tested performance, this model achieves the highest certified level available for motorcycle riders. That certification is not incidental — it is the engineering brief around which the entire product is built. D3O's proprietary material technology underpins this result: rate-sensitive molecules that flow freely under everyday movement yet lock together instantaneously under sharp impact loads, absorbing energy rather than transmitting it to the body.

For racers and trackday riders, this is the specification that matters above all others. When you go down at speed, the protection you are wearing needs to have been tested to the most demanding standard available — not merely a minimum compliance threshold.

Extended Coverage: Sternum and Ribs

Many chest protectors focus protection narrowly on the sternum. The RST D3O Racing design extends its coverage laterally across the rib cage, addressing a zone that absorbs significant force in typical motorcycle crashes. This broader protective footprint means a rider going down at a trackday is better shielded across the full front of the thorax, not just the centreline. The adjustable polycarbonate shell works in concert with the D3O core to add a rigid outer layer that resists deformation under load, reinforcing the overall protective system.

Race Suit Integration

A chest protector that adds bulk, rides up under braking or restricts your reach to the clip-ons is a liability on track, not an asset. The RST D3O Racing Chest Protector is built around a low-profile, dynamic-fit architecture that keeps the profile as slim as possible while maintaining full coverage. It sits close to the body, moves with the rider, and integrates into the chest cavity of a leather race suit or technical one-piece without creating pressure points or limiting the aggressive tucked position required at speed.

The lightweight build compounds this benefit: less mass on your chest means less fatigue through a race weekend, and no awareness of the protector when you need total concentration on the track.

Who Is This Chest Protector For?

The RST x D3O Racing Chest Protector is the right choice for riders who:

• compete in circuit racing or attend trackdays and demand certified race-grade chest protection
• wear a leather race suit or one-piece and need a chest armour solution that integrates properly rather than adding unwanted thickness
• want extended sternum and rib coverage beyond a standard insert provides
• prioritise certified protection level as the primary selection criterion, not just weight or price
• refuse to accept a compromise between genuine safety performance and riding comfort

Fitment & Compatibility

The RST x D3O Racing Chest Protector is designed as a standalone chest armour insert suitable for use with race suits and leather motorcycle jackets or one-pieces that include a chest armour pocket. It is not fitment-specific to a single garment. Confirm your suit's chest protector pocket dimensions against the protector profile before ordering; contact Inter-Pace if you need guidance on compatibility with a specific RST garment.

Specifications

• Manufacturer: RST
• Model: RST x D3O Racing Chest Protector
• Part number: 103680
• Protection technology: D3O
• Application: racing, track, trackdays
• Fit: low-profile / dynamic fit
• Coverage: extended — sternum and ribs
• Shell: adjustable polycarbonate
• Weight category: lightweight