4iiii Precision 3+ Non-Drive Side Power Meter - Shimano 105 R7100 (Black)

PML300-S23B00X

Rs. 36,900.00
/
incl., of all taxes. Shipping calculated at checkout.
Crank Length

A ride-ready power meter pre-installed on a genuine Shimano crank arm — accurate, long-lasting, and simple to fit straight onto your existing 105 R7100 crankset.

Overview

The Precision 3+ gives you real power data without the cost or hassle of replacing a whole crankset — it ships pre-installed on a genuine Shimano 105 R7100 left crank arm, so fitting it is as simple as swapping your existing arm. A trio of strain gauges reads the changes in your pedal stroke output through the full rotation, a feature most left-side-only power meters skip, and the whole unit has been third-party tested to a verified ±1% accuracy.

At just 9 grams and 5.5mm thick, the sensor pod adds almost nothing to the crank and stays well clear of your frame and heel. With up to 800 hours of battery life from a single CR2032 coin cell, you're looking at maybe one battery change a year rather than a running maintenance chore.

It measures your left leg's power output and doubles it to estimate total watts — the standard, well-proven approach for single-sided power meters, and a genuinely reliable way to start training with real numbers rather than perceived effort alone.

Why You'll Like It

±1% third-party verified accuracy
Genuinely reliable numbers you can actually train and pace by, not just a rough estimate.

Up to 800 hours of battery life
A single CR2032 coin cell lasts the better part of a year of regular riding before needing a swap.

Dual ANT+ and Bluetooth connectivity
Pairs with your head unit and training app simultaneously, with no mode-switching required.

Apple Find My integration
Genuine peace of mind if your bike ever goes missing — you can track the power meter's location directly.

Who Is It For?

This suits riders on a Shimano 105 R7100 crankset who want to start training and racing with real power data, without the cost of a full power-meter crankset replacement. It's a straightforward, budget-conscious entry point into structured, power-based training.

For BOTS customers building a first power-based training plan, this is a genuinely accessible way to get accurate numbers without committing to a premium dual-sided system.

Good to Know

This is a left-side (non-drive side), single-sided power meter — it measures left-leg power and doubles it, rather than reading each leg independently. Have your BOTS mechanic confirm your existing crank arm length and bottom bracket compatibility before fitting.

Technical Specifications
  • Compatibility: Shimano 105 R7100 crankset (Hollowtech II interface)
  • Measurement Point: Crank arm (non-drive/left side)
  • Connectivity: ANT+ and Bluetooth Smart (dual, simultaneous)
  • Data Transfer: Power, cadence
  • Accuracy: ±1% (third-party verified)
  • Power Range: 0–4,000W
  • Cadence Range: 30–170rpm
  • Battery Life: Up to 800 hours (CR2032 coin cell)
  • Protection Rating: IPX7
  • Added Weight: 9g
  • Crank Length: 170mm
Additional Information
  • Country of Origin: China
  • Imported By: Ensign Sports IGL
  • Net Quantity: 1N
  • Customer Care Address: 291, 10 Main, 5 Block, Jayanagar, Bangalore - 560041. Ph: (080)47183232, Email: support@bumsonthesaddle.com
  • Commodity: Power Meters
Warranty

This is a genuine product and is covered by a 1-month warranty from the date of original purchase against manufacturing defects in materials and workmanship.


Exclusions
  • Misuse or Negligence: The warranty does not cover damages resulting from misuse, abuse, or negligent handling of the products, including but not limited to improper installation, disassembly, or modification.
  • Unauthorized Repairs or Alterations: Any attempt to repair or alterations by individuals or service providers not authorized by the manufacturer will void the warranty.
  • Natural Wear and Tear: Normal wear and tear, including cosmetic deterioration, scratches, dents and fading over time, are excluded from the warranty coverage.
  • Accidents or External Forces: Damages caused by accidents, improper packing, collisions, unauthorized tampering or exposure to extreme external forces (e.g., impacts, falls, or severe weather conditions) are not covered under this warranty.
  • Incompatible Use: The warranty does not extend to damages resulting from using the products in ways inconsistent with their intended purpose or specifications.
  • Failure to Follow Instructions: Damages arising from a failure to follow the product's operating instructions, guidelines, or recommended practices as outlined in the user manual are not covered.
  • Battery Exclusions: For products with rechargeable Lithium-ion batteries, the warranty may exclude battery degradation over time or failures caused by non-compliance with proper charging procedures.
  • Third-Party Accessories: Damages caused by the use of third-party accessories, components, or modifications not explicitly approved by the manufacturer are not covered.
  • Failure to Provide Proof of Purchase: Warranty claims may require proof of purchase, and failure to provide such documentation may result in the exclusion of the product from warranty coverage.
  • Exclusion for Water Damage: Any damage relating to damage caused by water because some products are water repellant but not Water Proof
  • Non-specified conditions: Not includes damaged caused to products by improper accessories or improper fittings or for use in non specified conditions
Terms & Conditions
  • The warranty is available only to the Original purchaser/buyer of products
  • Service must be performed by Brand or an authorized reseller.
  • Insurance, handling and transportation charges to Brand Distributor shall be borne by Customer.
  • For some products registration is required to extend the warranty. Failure to register voids extended warranty
  • The decision to replace or repair a product is influenced by the brand and various factors

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