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Alpinestars · SM5

Alpinestars SM5 Racer TC-2 头盔

DOT, ECE 22.05

Design Story & Interactive HUD

Alpinestars (Italy)

The Narrative

驾驶 Alpinestars SM5 Racer TC-2 征服赛道。这款头盔专为追求极致性能且不失格调的骑手而设计。作为越野/摩托车越野赛的杰作,它将激进的美学与尖端的安全技术完美融合,内置的 MIPS 系统可有效减轻高速冲击下的旋转力。TC-2 认证确保其符合顶级摩托车越野赛的严苛标准,而空气动力学轮廓设计则能有效破风,减少阻力和风噪。内部采用精心设计的中间椭圆形贴合结构,提供紧密且稳固的包裹感,让您能全神贯注于行车路线。凭借在高温高强度骑行中保持凉爽的卓越通风通道,这款头盔不仅是防护装备,更是您骑行精准度的延伸。无论是在泥地上劈弯,还是在柏油路上挑战极限,SM5 Racer TC-2 都能为您提供以最高水平竞技所需的自信与清晰视野。

Technical Analysis

SM5 Racer TC-2 采用 Alpinestars 专利 MIPS 技术,并结合多密度 EPS 内衬,在保持低重心的同时增强了针对旋转冲击的保护性能。其空气动力学外壳设计配备了经过优化的进气口和排气口,可在高速行驶时平衡冷却气流,并将风噪降至最低。

Feature Highlights

MIPS impact protection system High-impact polymer shell Intermediate oval head shape Advanced ventilation system Emergency release cheek pads Multi-density EPS liner Removable and washable interior
Homologation ECE 22.06 Certified safety standard
Rotational Protection None Mitigates rotational impact
Emergency Release Not Equipped Cheek pad quick removal
Retention Strap Double D-Ring Chin strap buckle style
Acoustics Quietness 98 dB

Moderate: Balanced road noise levels.

Ventilation Flow 7/10

Good Flow: Standard EPS exhaust ports.

Wind Tunnel Tested No Optimized shell aerodynamics
Pinlock Tech Not Included Anti-fog shield insertion
Comms Integration Generic Speaker Cutouts Intercom cutout availability
Glasses Friendly No Inner lining eyewear grooves
Visor Shield Tech Single Visor Integrated drop-down sun visor
Removable Interior Partial / Fixed Washable lining modules

Intermediate Oval Shape

Intermediate oval fit, the standard ergonomic profile suited for the majority of riders.

Shell Construction Polymer Outer structural material
Measured Weight 1350g (2.98) Approximate medium size weight
Warranty 2 Manufacturer coverage duration
Primary Use Case Dirt/MX Optimized riding orientation
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Price History

Interactive Size & Fit Finder

Your Head Circumference 57 cm
52cm 55cm 58cm 61cm 65cm
Select Head Shape Profile
Recommended Helmet Size
Medium
Optimized contours.
Perfect for standard intermediate head profiles.

Alpinestars SM5 Racer TC-2 is a motocross/dirt bike helmet designed for off-road racing. It features a carbon fiber composite shell with an EPS liner and a removable chin bar (TC-2). The fit is generally aggressive and low-profile, suitable for riders with standard to slightly narrow head shapes who prefer a tight, secure fit typical of MX helmets.

How to measure

Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.

Regional Legality Guidance

US

Status: Legal for Off-Road Use

Required: DOT

Certified for use in the United States; meets DOT FMVSS 218 standards.

EU

Status: Legal for Off-Road Use

Required: ECE 22.05

Compliant with ECE 22.05 regulations for use in European markets.

CA

Status: Legal for Off-Road Use

Required: DOT

Accepted for use in Canada under DOT standards.

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