Engine & Performance
Powered by a 645?cc liquid-cooled, 90° V-twin (borrowed and retuned from the 2017 SV650), it delivers a healthy 68–71?hp and 44–46?lb-ft of torque, with stronger low- to mid-range punch thanks to revised cams, lighter pistons, and SCEM-coated cylinders .

Fuel delivery is via dual SDTV throttle bodies and 39?mm fuel injectors, helping both performance and efficiency (up to ~400–500?mile range on its 20?L tank) .

? Chassis & Suspension
Aluminum twin-spar frame mated to 43?mm non-adjustable forks (150?mm travel) and a preload/rebound-adjustable rear shock (160?mm travel) delivers a composed ride on road and gravel .

Weighs in around 213–216?kg (470–476?lb) (wet), depending on the model .

Features
Traction control with three settings (Mode 1, 2, and OFF) for confident riding in rain, twisties, or dirt .

Low RPM Assist to help prevent stalling in tight, slow-speed situations; and Easy Start System allows single-press ignition .

Three-position adjustable windscreen (9?mm taller) improves wind protection and reduces buffeting .

Wider, multifunctional instrument panel (borrowed from V-Strom 1000), plus a convenient 12?V power outlet .

Brake & Wheel Options
Dual 310?mm front discs and a single 260?mm rear disc with ABS standard.

Two models:

Standard – ten-spoke cast-aluminum wheels with Bridgestone Battlax Adventure radials.

650XT – wire-spoked wheels (still tubeless), plus handguards and lower engine cowl for tougher terrain .

Ergonomics & Touring Suitability
Upright rider stance with wide bars, a slim fuel tank, and a moderately tall 830?mm seat height, making it accessible to most riders .

Fuel tank holds 20?L (~5.3?gal), enabling long-range touring (real-world 400?mi estimates) .

Practical luggage rack with accessory compatibility shared across the V-Strom line .

Rider Impressions
Praised for its exceptional versatility: nimble in the twisties, smooth at highway speeds, and surprisingly capable on light off-road routes .

Considered one of the best “do-it-all” middleweight adventure bikes—reliable, easy to ride, and great value for under ~$9K MSRP .

Key Specs at a Glance
Specification Value
Engine 645?cc liquid-cooled 90° V-twin
Power ~71?hp @8,000?rpm
Torque ~46?lb-ft @6,400–6,500?rpm
Transmission 6-speed, chain final drive
Suspension (F/R) 43?mm forks / preload+rebound shock
Wheel Sizes (F/R) 19? front, 17? rear
Weight (wet) 470–476?lb (213–216?kg)
Seat Height 830?mm (32.7?)
Tank Capacity 20?L (5.3?gal)
MSRP (US) ~$8,799 (Standard), $9,299 (XT)

? Pros & ?? Considerations
Pros

Affordable and versatile for commuting, touring, and light off-road

Improved engine performance with user-friendly electronics

Decent wind protection and comfort at highway speeds

Considerations

Windshield still requires tool to adjust

Suspension is soft; not as customizable as some rivals

On long rides, some may want a more supportive seat

Final Word
The 2017 V-Strom 650 strikes a near-perfect balance: it’s affordable, comfortable, dependable, and genuinely fun in diverse riding conditions—from canyon roads to gravel backroads. It’s no wonder this model earned high praise and strong sales through its revamped third generation.

Want info on maintenance, touring accessories, or comparisons with other adventure bikes? Just say the word!



You said:
SAME THING WITH A 2021 yamaha mt-mt-087

ChatGPT said:
Here’s a detailed breakdown of the 2021 Yamaha MT-07, the popular “Hyper Naked” middleweight bike:

Overview & Style
Third-generation overhaul alongside the MT family. Sharper, more aggressive styling with compact LED headlight cluster (“MT face”), LED signals front and rear, and refreshed bodywork for a premium, torque-focused silhouette .

Acceptable paint schemes included Storm Fluo, Team Yamaha Blue, and Matte Raven Black; MSRP starts at $7,699 .

Engine & Performance
Powered by a 689?cc liquid-cooled CP2 parallel-twin with an unruly 270° crankshaft, delivering around 74?hp (75?hp) and 49–50?lb-ft torque .

Updated air intake, ECU mapping, and a new 2-into-1 exhaust to comply with Euro?5, boosting low-rpm smoothness and throttle control .

Power delivery remains user-friendly yet engaging, praised as ideal for commuting and sporty rides .

Chassis, Suspension & Brakes
Steel frame with KYB suspension: 41?mm non-adjustable fork (129?mm travel) and preload/rebound-adjustable rear shock .

Heavier-duty front brakes: dual 298?mm wave discs with four-piston calipers and standard ABS; rear remains 245?mm .

Equipped with wide aluminium tapered handlebars for better leverage; Michelin Road?5 tires added for superior wet grip .

Dimensions & Ergonomics
Wet Weight: ~406?lb (184?kg)

Seat Height: 31.7?in (805?mm)

Fuel Tank: 3.7?gal (14?L)

Wheelbase: 55.1?in; compact, agile chassis supports both urban commuting and nimble canyon riding

Electronics & Features
Clean inverted LCD dash (spot-color tachometer, gear indicator, clock, trip meters), controlled via left-handlebar switch .

LED headlight and indicators, improved switchgear and handlebar adjustability .

No traction control or riding modes—kept mechanical and direct.

Rider Impressions
Strengths

Versatile and fun across diverse riding: daily commuting, canyon carving, short touring .

Smooth, snappy engine character with strong mid-range; great value at MSRP .

Console and lighting upgrades add to the modern riding experience .

Common Critiques

Suspension criticized as soft and imprecise over rough roads—some find the front fork feels unstable in corners; aftermarket shocks are popular upgrades .

Throttle response occasionally feels abrupt; gearbox and switchgear are simple but considered less refined .