Is my old combine supported?

Yes. If your combine has a clean grain elevator, we can install our sensors. We support models from the 1990s and 2000s including John Deere 2200/9000 series, CLAAS Dominator, Mega, and early Lexions.

How hard is the installation?

Installation typically takes about 2 hours. It requires drilling a small hole in the elevator housing for the sensor and routing power to the cab. No complex hydraulic or CANBUS integration is needed for the basic kit.

How much does a retrofit yield monitor cost?

A Green Growth retrofit yield monitor is a one-time hardware purchase plus a small annual cloud fee that covers telemetry upkeep, data storage and the web dashboards — together still a small fraction of the €300,000+ price of a new combine. Because it reuses your existing harvester and your own phone or tablet as the display, there is no proprietary cab screen to buy. Hardware pricing depends on crop type and kit configuration; request a quote for your specific machine.

Bring Precision Farming to Your Older Combines

Name: Green Growth Retrofit Yield Monitor
Brand: Green Growth

Your combine runs fine. It just needs a brain upgrade. Install Green Growth's retrofit yield monitor and start mapping your yield today.

Get Your Kit

Why Retrofit?

New combines cost €300,000+. A retrofit kit costs a fraction of that. If your harvester's mechanicals are sound, there's no need to replace it just to get data.

Our system operates independently of the combine's electronics. We don't need a CANBUS connection to measure yield.

Independent System: Has its own GPS and 4G connection.

Universal Fit: Fits any elevator with a rectangular housing.

What It Costs & What's Included

A Green Growth retrofit yield monitor is a one-time hardware purchase plus a small annual cloud fee covering telemetry upkeep, data storage and the web dashboards. Together it costs a small fraction of the €300,000+ price of a new combine, and because it uses the phone or tablet you already own as the display, there's no proprietary cab screen to buy.

In the kit

Optical grain-flow sensor
Processing unit with built-in GPS + 4G
Wiring harness and mounting hardware
Free iOS / Android cab app (live yield map)

Specs at a glance

Install: ~2 hours, DIY, common tools
Calibration: remote, no load-wagon runs
Fits combines: ~1995 to current, any brand
Exports: Shapefile (.shp) & ISOXML

No ongoing lock-in

You own your yield data outright
No CANBUS or dealer visit needed
Works independently of the combine's electronics
Moves to your next machine — no re-buy

Supported Models (Examples)

We have successfully retrofitted hundreds of machines. Common models include:

John Deere: 9000 Series (9500, 9600), W-Series, T-Series, C-Series, older 2000 series

CLAAS: Dominator (all), Mega 204/208/218, Lexion 400/500 series (without Quantimeter)

New Holland: TX 30/60 Series, TF 40/70 Series, older CX/CR models

Case IH: 1600/2100/2300 Axial-Flow series

Massey Ferguson: 30/40 Series, Cerea

Deutz-Fahr: TopLiner, StarLiner

Rostselmash: Don 1500, Acros, Vector

Sampo Rosenlew: 2000/3000 Series

How It Works

1. Optical Sensor

Installed on the clean grain elevator. It measures the volume of grain passing by using light, not impact. This means less wear and minimal calibration drift.

2. Cloud Processing

Data is sent instantly to the cloud. We combine volume data with GPS speed and position to calculate precise yield per hectare.

3. Live Mapping

You see the map building in real-time on the mobile app. Spot low-yielding areas instantly while you harvest.

Don't harvest blind this season.

Upgrade your combine now and get the data you need to improve next year's crop.

Request Retrofit Quote