Vision Metron 5D ACR Evo Integrated Handlebar & Stem Review 2026
What to Look For
Plenty of triathletes ride a road bike rather than a dedicated TT machine for training, brick sessions and shorter-course racing — and an integrated aero cockpit is one of the more effective upgrades for that bike, cleaning up cable routing and cutting frontal drag without the cost of a full frame change. Vision’s Metron 5D ACR Evo is the latest version of a cockpit that’s been through several generations, and this update focuses on shaving weight and stack height rather than reinventing the design.
Key Features
- 10° forward bend — Carried over from the previous Metron 5D, this bar shape is designed to open the chest and elbows for easier breathing on sustained climbs, with a small 5mm offset in the drops for extra wrist room.
- Weight — 320g for a 110mm stem / 42cm bar combination — around 40g lighter than the previous-generation Metron 5D.
- Lower stack height — 40mm stack, 15mm lower than before, which allows a lower, more aerodynamic front-end position on the steerer tube for riders chasing every aero gain.
- Fully internal ACR cable routing — Designed around hydraulic disc brakes with either mechanical or electronic shifting, keeping cables entirely hidden through the bar and stem for a cleaner aero profile.
- Fit range — Stems from 80–140mm and bars from 36–44cm (centre-to-centre at the hoods), covering riders from smaller frames through to tall sprinters.
Our Verdict
This is an incremental but genuinely useful update rather than a ground-up redesign — lighter, lower and stiffer than the outgoing Metron 5D, with better damping from a revised carbon layup that takes some of the edge off road buzz through the bars. The expanded fit range (stems from 80mm right up to 140mm, bars from 36 to 44cm) is a real practical improvement, since older integrated cockpits often forced a compromise between the ideal stem length and the ideal bar width. For triathletes running a road bike as a second bike for hilly training or shorter-course racing, this is a legitimate upgrade if you’re already committed to fully internal cable routing — just be aware that fitting an integrated cockpit is a bigger job than swapping a standard bar and stem, and isn’t something to attempt without the right tools or a shop’s help.
Priced at £599.99 on Tredz (RRP £644.99).
Buying Tips
- Confirm your frame’s steerer tube and headset are compatible with a fully internal ACR routing system before ordering — not every frame is set up for it, even if it takes a standard round steerer.
- Have a qualified mechanic fit an integrated cockpit unless you’re experienced with internal cable routing — rerouting hydraulic hoses and electronic wires through a one-piece bar and stem is considerably more involved than a standard bar swap.
- Measure your current stem length and bar width before ordering — the expanded fit range only helps if you order the right size for your existing position.
Care and Maintenance
Check stem bolt torque periodically against the manufacturer’s spec sheet — carbon cockpits are more sensitive to over-tightening than alloy components. Inspect the bar for any stress cracks after a crash, however minor it looked, before riding again — carbon can fail without obvious external damage. Keep the internal cable routing clean and lightly lubricated at entry points to prevent long-term wear on hydraulic hoses.
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