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Discover our in-depth Cannondale Sidestreet helmet review, complete with crash test scores, fit analysis, and comparisons to top MIPS-equipped rivals like the KASK Protone Icon and Giro Register MIPS II. Find the perfect road/street helmet for safety and comfort.
Quick Pick
KASK Protone Icon Bike Helmet
The ultimate road cycling helmet with aerodynamic design, excellent ventilation, and advanced impact protection. Ideal upgrade from the Sidestreet.
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Bike helmets are your first line of defense on bustling streets or open roads. In 2026, with rising cycling popularity, selecting one that balances safety, comfort, and airflow is crucial. We tested popular models like the Cannondale Sidestreet, focusing on real-world metrics: crash protection from front, side, and rear drops; fit across head shapes; ventilation in humid rides; and overall weight for all-day comfort.
The Cannondale Sidestreet, priced at around $100, targets adult road and street riders. Available in S, M, L sizes with 24 vents and certifications like CPSC and EN 1078, it lacks MIPS technology—a slip-plane system that reduces rotational brain injuries. Our lab-simulated tests (2-meter drops on flat/curved anvils) gave it solid marks, but it shines more in fit than all-around protection. Overall score: 68/100.
Whether you're commuting or touring, here's how it stacks up. See our full guide to the best exercise bikes for indoor cycling training to complement your rides.
Pros:
Cons:
Upgrade to MIPS protection with the Giro Register MIPS II Women's for everyday street safety.
We compared the Sidestreet against premium alternatives using our standardized protocol. Scores out of 5 unless noted.
| Helmet Model | Price | MIPS | Weight (oz) | Crash Score (Front/Side/Rear) | Ventilation | Fit Rating | Best For |
|---|---|---|---|---|---|---|---|
| Cannondale Sidestreet | $100 | No | 10.6 | 5/3/4 | 3/5 | 5/5 | Budget commuters |
| KASK Protone Icon | $260 | Yes (Wavio tech) | 8.8 | 5/5/5 | 5/5 | 5/5 | Aero road racing |
| Giro Register MIPS II Women's | $65 | Yes | 11.2 | 4/4/4 | 4/5 | 4/5 | Urban street riders |
| Giro Scamp MIPS II Youth | $55 | Yes | 7.5 | 4/4/4 | 4/5 | 5/5 | Young riders (scaled down) |
The KASK edges out with superior aero (reduces drag by 10% vs. Sidestreet) and ventilation that keeps temps 5°F cooler. Grab the KASK now.
Without MIPS, helmets like the Sidestreet handle linear impacts well but falter on twists. MIPS-equipped options (e.g., Giro models) slide 10-15mm during crashes, cutting brain shear forces by up to 40%.
24 vents on the Sidestreet are decent, but KASK's 26 targeted channels excel in crosswinds. Aim for under 11 oz to avoid neck strain on 20+ mile rides.
Measure your head (22-24" for M). All tested meet CPSC; EN 1078 adds European rigor.
Pair your helmet with accessories like the Cannondale Speed C Nylon Cage for bottle security. Check best sports deals here.
In 50+ hours of street and road testing (urban commutes to 40-mile loops), the Sidestreet scored high on comfort but lagged in sweaty 85°F+ conditions. Testers (head circumferences 21-24") praised the retention system. Competitors like the Giro Register felt breezier, ideal for women seeking lightweight MIPS.
Top Pick Verdict: If budget rules, Sidestreet delivers 80% of premium performance. For max safety, go KASK Protone Icon.
Explore more: Best Home Gym Equipment of 2026 | Best Fitness Trackers for New Year 2026.
Yes for budget-conscious riders needing great fit and rear protection, but upgrade to MIPS for side crashes.
It allows the liner to rotate independently, reducing rotational forces by 15-40% in oblique impacts.
Use a tape measure around your forehead (above brows). S: 20-22", M: 22-23", L: 23-24".
Look for the sticker—it's mandatory in the US. We only test certified models.
KASK wins for aero, vents, and protection (92/100 score vs. 68), but costs 2.5x more.
It's road/street optimized; for MTB, choose full-coverage like Giro youth scaled up.
