4iiii

4iiii PRECISION 3+ Shimano XT

~~£329.00~~ £349.00

Shimano XT left-sided power meter with ±1% accuracy, ANT+/Bluetooth connectivity and up to 800-hour battery life.

Crank Length: 170

170 175

Product variants

Quantity

In Stock | Estimated 3-5 Days Delivery Free UK delivery over £50

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Key Benefits

Power-Based MTB Training — Track watts and cadence across trails and climbs.
Accurate Measurement — ±1% claimed power accuracy.
Long Battery Life — Up to 800 hours on a replaceable CR2032.
Compact Sensor — Adds approximately 9 g to the crank arm.
Connected Riding — ANT+ and Bluetooth Smart for compatible devices.
Weather Resistance — IPX7-rated housing for wet riding conditions.

The 4iiii PRECISION 3 power meter for Shimano XT brings structured power-based training to mountain biking. Fitted to a replacement Shimano XT left crank arm, the low-profile sensor measures watts and cadence while adding very little extra weight to the bike.

With ±1% claimed accuracy, ANT+ and Bluetooth Smart transmission, IPX7 water resistance and up to 800 hours of battery life from a replaceable CR2032 cell, it provides dependable measurement for long trail rides, XC racing and indoor sessions.

Choose the crank length matching your Shimano XT setup and check frame clearance before ordering. Apple Find My is a feature of selected newer models; please confirm the exact generation if this is important to your setup.

Technical Specifications

Crank family: Shimano XT left-side replacement crank arm
Available crank lengths in Shopify: 170 and 175 mm
Measurement: Non-drive-side, left crank arm
Power accuracy: ±1%
Connectivity: ANT+ and Bluetooth Smart
Battery: Replaceable CR2032; up to 800 hours
Power range: 0–4,000 W
Cadence range: 30–170 rpm
Water resistance: IPX7
Power-meter weight: Adds approximately 9 g
Sensor profile: 5.5 mm
Warranty: 3 years
Apple Find My: Not included on original PRECISION 3 (non-plus) models

Suggested Use & Compatibility

For mountain bikers with a compatible Shimano XT crankset who want power data for intervals, climbing and XC race pacing. Replaces the left crank arm only; not a complete chainset. Match the crank model, length and spindle interface, and check clearance between the power-meter pod and frame. Not interchangeable with road cranks or XTR without confirming fit. Connect with compatible ANT+ or Bluetooth Smart equipment. Model generation must be confirmed before advertising Apple Find My.

Why We Choose 4iiii

We choose 4iiii because they’re at the forefront of cycling innovation, delivering world-class power meters and performance technology trusted by both pro teams and everyday riders. Their mission aligns with ours: making advanced training tools accessible, accurate, and reliable for all athletes.

Proven Accuracy – +/-1% precision power measurement for trusted performance data.
Innovation-Driven – Pioneers in lightweight, compact power meter design.
Ride Ready – Durable, weatherproof tech built for real-world cycling conditions.
Trusted by Professionals – Used by elite WorldTour cycling teams worldwide.

That’s why 4iiii is part of the North Sports collection — giving riders the tools they need to train smarter, push harder, and achieve their goals.