Ducati Monster 821
The Ducati Monster 821 has a top speed of 230 km/h (estimated), produces 109 hp and weighs 193 kg. Motoryk rates it 8/10.
The Ducati Monster 821 was introduced in 2014 as a mid-range naked roadster, slotting between the Monster 696 and the flagship Monster 1200 to broaden the Monster lineup's appeal. It featured the Testastretta 11° twin-cylinder engine and was notable for bringing a more premium, performance-oriented experience to riders who wanted more than an entry-level Monster without the full commitment of the 1200. The 821 received updates in 2018 with revised styling and improved electronics before being discontinued around 2021, replaced by the Monster 937.
109 hp
Power
89 Nm
Torque
193 kg
Weight
230 km/h (estimated)
Top Speed
6.5 L/100km (approx. 15.4 km/L, typical real-world average)
Fuel
Naked
Body
Video Review
What Buyers Should Know
Desmo Service Costs
The Ducati Monster 821 requires a Desmodromic valve service every 15,000 miles, which can cost $600–$1,200 at a dealership. Always verify service history before buying, as skipped intervals can lead to serious engine damage.
Watch for Coolant Leaks
A known issue on the 821 is coolant weeping from the water pump seal, especially on pre-2018 models. Inspect the lower left engine area carefully and ask the seller about any overheating history.
Strong Resale Value
The Monster 821 holds its value better than many middleweight competitors, often retaining 60–70% of its original price after three years. Its Ducati badge, sporty styling, and liquid-cooled 821cc twin make it consistently desirable on the used market.
Generations & Specs by Year
Introduced 821cc Testastretta 11° engine, tubular steel trellis frame, ABS standard, Ducati Safety Pack optional.
Revised styling, new full-color TFT display, updated ergonomics, Ducati Safety Pack made standard equipment.
Stealth edition introduced, Euro 4 compliance updates, minor cosmetic refinements, color palette expanded.
Used Buyer Review
"A brilliant middleweight if bought with eyes wide open."
$7,500-$11,000 usedThe Monster 821 sits in that sweet spot where Ducati character meets everyday usability, but buying one used requires homework. The 821cc Testastretta twin pulls hard from 4,000rpm and sounds absolutely savage with a decent exhaust, but check the service history religiously — desmo valve services run $600-1,000 and many previous owners conveniently 'forgot' them. Look for bikes with documented 15,000-mile services and ask specifically about the belt change history. The riding position is genuinely comfortable for a naked bike, and the chassis feels telepathic through corners. DTC traction control and ABS are confidence-inspiring without being intrusive. Earlier 2014-2015 examples had some fueling hiccups at low speeds that Ducati improved in later models, so 2017-onward bikes are noticeably smoother in traffic. Seat quality is questionable beyond 90 minutes, and Italian electrics can surprise you if the bike sat unused. Budget an extra $1,500 above purchase price for a full service and peace of mind. Do that, and you've got one of the most rewarding middleweights available.
Top 10 Accessories
Curated picks for the Ducati Monster 821 — owned, ridden, recommended.
Common Problems
🔥 1 CRITICALTest idle quality, listen for surging at low RPM
Ask for service records, due every 15,000 miles
Inspect under engine for dried coolant residue
Check dashboard for ABS warning light at startup
✅Pre-Purchase Checklist
Decent but maintenance-heavy, budget accordingly
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Ducati Monster 821
Suzuki Gsx-s750
Suzuki Gsr750
Mv Agusta Brutale 800
Ktm 790 Duke
Benelli Tnt 899
Compare Ducati Monster 821 Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Ducati Monster 821 vs Suzuki Gsx-s750
Specs · Power · Buyer verdict
Ducati Monster 821 vs Suzuki Gsr750
Specs · Power · Buyer verdict
Ducati Monster 821 vs Mv Agusta Brutale 800
Specs · Power · Buyer verdict
Ducati Monster 821 vs Ktm 790 Duke
Specs · Power · Buyer verdict
Ducati Monster 821 vs Benelli Tnt 899
Specs · Power · Buyer verdict
More Ducati Monster 821 Guides
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Discussion
Frequently Asked Questions
What are common problems with the Ducati Monster 821? +
Throttle body sync causing rough idle/stalling: Test idle quality, listen for surging at low RPM (moderate) | Desmodromic valve service overdue: Ask for service records, due every 15,000 miles (serious) | Coolant leaks from water pump weep hole: Inspect under engine for dried coolant residue (moderate)
Is the Ducati Monster 821 a good motorcycle? +
A brilliant middleweight if bought with eyes wide open. Rating: 8.0/10. Best for: Experienced riders wanting Italian soul daily. Avoid if: Budget-conscious riders skipping service intervals.
What is the horsepower of the Ducati Monster 821? +
The Ducati Monster 821 produces 109 hp @ 9,250 rpm, with 89 Nm @ 7,750 rpm of torque. Top speed: 230 km/h (estimated).
Is the Ducati Monster 821 good for beginners? +
Yes — the Ducati Monster 821 is a reasonable choice for new riders (109 hp is manageable), weighing 193 kg. Experienced riders wanting Italian soul daily
Is the Ducati Monster 821 reliable? +
Owners report 1 critical issue to watch for on the Ducati Monster 821, notably: Desmodromic valve service overdue (Ask for service records, due every 15,000 miles). Buy with a pre-purchase inspection.
Is the Ducati Monster 821 good for daily use? +
Experienced riders wanting Italian soul daily Fuel: 6.5 L/100km (approx. 15.4 km/L, typical real-world average).
How fast is the Ducati Monster 821? +
The Ducati Monster 821 reaches a top speed of 230 km/h (estimated), producing 109 hp at 193 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Ducati Monster 821? +
Motoryk has curated a Top 10 gear list specifically for the Ducati Monster 821, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/ducati/monster-821/top10. Each pick is matched to this bike's spec.
