Aillio Bullet R1 vs R2 vs R2 Pro: Which Used Bullet Should You Buy?

You've narrowed it down to an Aillio Bullet. Good choice. Now comes the harder part: the Aillio Bullet R1 vs R2 question, plus the R2 Pro sitting one step above both. All three roast up to about a kilo of coffee on induction heat. They look almost identical on a listing page. But they differ in power, airflow control, and the outlet they need, and those details decide which used Bullet will actually work for you.

This guide breaks down the current Bullet lineup. It explains the R1 V1 and V2 versions still on the used market, and shows you what to check before you buy. If you already own a Bullet and plan to upgrade, there's a section for you too.

Key Takeaways

• The Bullet R1 V2 is now a legacy model. Aillio no longer sells it new, but it still supports the R1 with spare parts and service.
• The R1 and R2 share the same 1 kg maximum batch. The R2 adds more induction power (1,700 W vs 1,550 W), finer power steps, and automatic FlowSense airflow control.
• The R2 Pro roasts up to 1.2 kg, runs on 2,300 W, and needs a dedicated 240V/20A circuit. It will not run on a standard 120V outlet.
• Older R1 units come in three versions: V1, V1.5, and V2. Check for the infrared bean temperature sensor (IBTS) before you buy.
• A used R1 V2 gives you the same IBTS roast data as the newer models. That makes it the strongest value for home and sample roasting.
• Any Bullet is still a 1 kg class machine. If you need several kilos per batch, look at a small production roaster instead.
• Moving from an R1 to an R2 means you have a Bullet to sell, and used Bullets attract steady buyer interest.

The Aillio Bullet Lineup at a Glance

Aillio launched the original Bullet in 2015, then introduced the R2 and R2 Pro at World of Coffee in Copenhagen in 2024. Here's how the three models you'll see on the used market compare on paper.

All three use IBTS, the infrared sensor that reads bean surface temperature directly instead of waiting on a slow probe. All three work with Aillio's RoasTime software, and the R1 V2 also pairs with Artisan and Cropster. So the shared core is strong. The differences sit at the edges: power headroom, airflow automation, and capacity.

Bullet R1 V1 vs V2: Know Which Version You're Buying

This is the detail most used listings skip. The R1 went through three hardware stages, and they don't roast the same way.

• V1: the original Bullet. It shipped without IBTS and relies on a traditional bean probe.
• V1.5: a V1 that had the IBTS module added later as an upgrade.
• V2: IBTS from the factory, plus an updated induction module and a USB-C control module.

Aillio still sells upgrade parts that bring a V1 or V1.5 up to V2 hardware. That's useful, but it's also work and money on top of your purchase. If a listing just says "Aillio Bullet R1," ask the seller which version it is. Ask for a photo of the IBTS module and the USB port. A USB-C port points to V2 hardware.

Our take: a clean R1 V2 is the used Bullet to target unless you're comfortable doing the upgrade yourself. The V2 gets you the IBTS data that made the Bullet popular in the first place.

Aillio Bullet R1 vs R2: What Actually Changed

The R2 is not a bigger Bullet. Both models top out at 1 kg. What you get with the R2 is finer control over the same batch size.

More power, in smaller steps

The R2 delivers 1,700 W across 10 heat steps, compared with 1,550 W across 9 on the R1. Power delivery precision also tightens from plus or minus 2% to plus or minus 0.5%. In practice, a heat change on the R2 lands closer to what you asked for. That matters when you're trying to repeat a profile batch after batch. A full 1 kg batch on the R2 reaches first crack in about 7 to 9 minutes.

FlowSense airflow control

FlowSense watches airflow and adjusts fan speed automatically. It also alerts you when chaff starts to block the airflow path. On an R1, you manage the fan by hand and clean on a schedule. Neither approach is wrong. FlowSense just takes one variable off your plate.

Who should still buy a used R1 V2

Maybe you roast for yourself, run cupping samples, or want to learn profiling before you commit to a production machine. Then the R1 V2 makes a lot of sense. It roasts the same 1 kg batch, it carries the same IBTS sensor, and it stays supported by Aillio. Some long-time R1 owners say the R2 upgrade is hard to justify for home use alone.

Not sure a 1 kg machine matches your volume at all? Start with our guide to what size coffee roaster you need. It walks through the weekly volume math step by step.

Bullet R2 vs R2 Pro: Your Outlet Decides

On paper, the R2 Pro is the obvious winner. It has 2,300 W of induction power, 14 heat steps, and a 1.2 kg maximum batch. It also comes with a Pro cooling tray that has an automatic stirrer and a bag spout. A full 1.2 kg batch reaches first crack in under 7 minutes.

But there's a catch. The R2 Pro runs on 200 to 240V only. In the US, it ships with NEMA 6-20P and L6-20P plugs and needs a dedicated 240V/20A circuit. Roasting in a home kitchen or a café corner with only household outlets? Budget for an electrician before you budget for the roaster. The standard R2 runs on a normal 120V, 15A household circuit.

How much roasted coffee the extra 200 g gives you

Green coffee loses weight as it roasts. Coffee consultant Scott Rao puts typical roast loss at 14% to 20%, with lighter specialty roasts near the low end. He also cautions that a machine's real working capacity usually sits below its stated maximum.

Here's what that means for a Bullet, using 15% loss:

• A full 1 kg batch on an R1 or R2 yields about 850 g of roasted coffee.
• A full 1.2 kg batch on an R2 Pro yields about 1,020 g of roasted coffee.
• Running four full batches back to back, that's roughly 3.4 kg per hour on the R2 vs 4.1 kg per hour on the R2 Pro.

Those are best-case numbers with every batch full. For planning, our sizing guide uses a safer floor of 60% batches at three an hour. On that basis, a 1 kg Bullet gives you about 1.5 kg of roasted coffee an hour, and an R2 Pro about 1.8 kg. The gap between models holds either way.

For a home roaster, that difference rarely matters. For someone selling bags at a farmers market or supplying one café, it saves about one hour for every six hours of roasting. Keep one more thing in mind. The R2 Pro produces a lot of smoke at full capacity, so plan your venting before the machine arrives.

Which Used Bullet Fits Your Roasting

Match the machine to the job you'll actually give it.

Home roasting and learning

A used R1 V2 is the value pick. You get the data, the software, and the community profiles without paying for capacity you won't use. Comparing the Bullet against other entry machines? Our roundup of the best coffee roaster machines for beginners puts it side by side with options like the Ikawa and Diedrich IR-1.

Café sample roasting and small retail

The R2 earns its place here. FlowSense and the tighter power steps make it easier to repeat the same profile when a second person roasts on your shift. It still plugs into a standard outlet behind the counter.

Nano roasting for sale

If you're selling coffee and roasting several hours a week, the R2 Pro is worth the electrical work. The Pro tray and back-to-back batches cut real time from your week.

When a Bullet is too small

Be honest about your two-year volume. If you already roast more than a few kilos a day, even an R2 Pro will keep you at the roaster for long shifts. At that point, look at small batch roasters in the 1 to 4 kg range, where a single batch can match two or three Bullet roasts. For a wider view of production machines, see our guide to the best commercial coffee roasting machines.

What to Check on a Used Aillio Bullet

Bullets are compact and electric, so the inspection is simpler than on a gas drum roaster. It still pays to be thorough.

• Version and voltage. Confirm R1 V1, V1.5, or V2, and confirm the R1 or R2 is the 120V or 240V version. A 240V unit won't run in a 120V space.
• IBTS readings. Ask for a recent roast log from RoasTime. A smooth bean temperature curve suggests a clean, working sensor.
• Induction module. This is the costliest part to replace. Ask if it has ever been swapped and when.
• Fans. Watch the exhaust and cooling fans run during preheat and cooling. Any fan that stays still deserves a question.
• Roast count. RoasTime logs every batch. A seller who shares the count gives you a real picture of wear.
• Chaff and cleaning. Look at the chaff collector and exhaust path. Heavy buildup tells you how the machine was maintained.
• What's included. Cooling tray, chaff filter, tool kit, USB cable, and the original box all add value and make shipping safer.

For a broader inspection list that applies to any roaster, use our used coffee roaster safety checklist before you send a deposit.

Upgrading from an R1 to an R2? Sell Your Bullet First

Many R2 buyers already own an R1. If that's you, your current Bullet is worth money to the next roaster in line. Buyers search for used Bullets by model name. An R1 V2 with clean logs and its original accessories is an easy machine to list.

A few things help your Bullet sell faster:

• Export your RoasTime roast count and a few recent roast curves. They prove the IBTS and controls work.
• State the version (V1, V1.5, or V2) and voltage clearly in the first line of your listing.
• Photograph the data plate, the USB port, and every included accessory.
• Keep the original box. A Bullet ships much more safely in its foam insert.

Our guide on how to sell a small business coffee roaster under 5 kg covers pricing and listing prep for machines in the Bullet class. When you're ready, list your Bullet with CoffeeTec and reach buyers who are already looking for one.

Find a Used Aillio Bullet on CoffeeTec

Aillio has shipped more than 16,000 Bullets to over 100 countries, so used units come up regularly. They also move quickly. Recent CoffeeTec listings for used R1 V2 units have sat roughly between $2,350 and $2,650, and a factory-crated R2 Pro listed at $4,800. Prices shift with version, condition, and included accessories.

Browse current inventory in our used Aillio Bullet roasters collection. Every listing shows condition, year, voltage, and what's included. Don't see the model you want? Request a specific Bullet and our team will let you know when a match comes in.