Aprilia RS 660 vs. Yamaha YZF-R7: Over the past few production cycles, the middleweight supersport segment across the United States has experienced an absolute mechanical revolution. For decades, this class was completely ruled by high-revving, inline-four race replicas like the R6 and ZX-6R. While incredible on a racetrack, these old-school machines were exhausting, hot, and impractical to manage on daily city commutes or tight, bumpy canyon backroads. Today’s enthusiasts demand a smarter package: high-performance parallel-twin engines that deliver massive mid-range torque, razor-sharp handling agility, and approachable everyday operating costs.
Two undisputed twin-cylinder giants stand completely unopposed at the peak of this modern class: the highly exotic, tech-loaded Aprilia RS 660 and the raw, pure mechanical weapon, the Yamaha YZF-R7. While both feature aggressive, full-fairing supersport styling, they approach the road from completely opposite engineering directions.
In this comprehensive BikeWikh real-world comparison review, we break down their engine characters, chassis hardware packages, electronic rider safety aids, and true highway fuel economy (MPG) to determine the ultimate middleweight sportbike for your garage.
Aprilia RS 660 vs. Yamaha YZF-R7: Technical Performance Specification Matrix
Evaluating the core specifications highlights why these two parallel-twin sport weapons deliver such contrasting personalities through sweeping mountain curves.
| Engineering Metric | Aprilia RS 660 | Yamaha YZF-R7 |
|---|---|---|
| Engine Configuration | 659cc Liquid-Cooled Parallel-Twin | 689cc Liquid-Cooled Parallel-Twin (CP2) |
| Peak Power Output | 100 Horsepower @ 10,500 RPM | 73.4 Horsepower @ 8,750 RPM |
| Peak Torque Output | 49.4 lb-ft (67 Nm) @ 8,500 RPM | 49.4 lb-ft (67 Nm) @ 6,500 RPM |
| Wet Curb Weight | 403 lbs (183 kg) | 414 lbs (188 kg) |
| Front Suspension | Fully Adjustable 41mm Kayaba USD Forks | Fully Adjustable 41mm KYB USD Forks |
| US Base Starting Price | $11,499 | $9,199 |
Engine Character: Exotic High-Revving Twin vs. Punchy CP2 Torque
While both motorcycles utilize a modern parallel-twin engine architecture with a 270-degree crankshaft configuration, their internal engine loops yield vastly different power deliveries.
Aprilia RS 660: The Italian Screamer
The heart of the Aprilia RS 660 is an exotic 659cc parallel-twin engine—essentially the front bank of Aprilia’s legendary RSV4 superbike motor chopped in half. This power plant is engineered completely for high-RPM velocity. Pushing out an incredible 100 horsepower, the RS 660 mimics the top-end rush of an old inline-four while offering a broad, flat torque curve. Once the digital tachometer sweeps past 7,000 RPM, the Aprilia screams with a fierce intake howl all the way to its 11,500 RPM redline. It feels fast, aggressive, and perfectly suited for chasing lap times on open track days.
Yamaha YZF-R7: The Master of Low-End Grunt
The Yamaha YZF-R7 utilizes the highly acclaimed, bulletproof 689cc CP2 (Crossplane 2-cylinder) engine shared with the MT-07. Yamaha’s focus here is pure, instantaneous street torque. Because it packs a larger displacement core and features a shorter-stroke configuration, the R7 delivers an aggressive surge of power starting as low as 3,000 RPM. Twist the throttle in almost any gear, and the R7 leaps forward with a playful, predictable punch that makes digging out of tight, slow canyon corners effortless. While it runs out of breath at the top end compared to the Aprilia, it is an exceptionally fun, engaging, and bulletproof engine for everyday street riding.
Suspension, Braking Hardware, and Track Ergonomics
Both motorcycles feature fully adjustable 41mm inverted front forks, but their structural chassis stances place the rider in very different environments.
- The Yamaha YZF-R7 Stance: The R7 features an uncompromising, full-on racing riding triangle. Utilizing low clip-on handlebars mounted directly beneath the top triple clamp and high-set footpegs, it forces the rider into a hyper-aggressive, tucked supersport stance identical to a traditional race bike. Weighing 414 pounds, it tips into corners instantly and offers elite front-end feel. Braking duties are handled beautifully by track-ready radial-mount Brembo master cylinders squeezing dual 298mm discs.
- The Aprilia RS 660 Stance: The RS 660 takes a much more civilized, street-friendly approach to ergonomics. The clip-on handlebars are mounted slightly higher, placing less strain on the rider’s wrists and lower back, making it a fantastic option for daily commuting. However, its lightweight aluminum dual-beam frame and a featherweight 403-pound wet curb weight make it incredibly nimble. Backed by high-end Brembo calipers and a stiff chassis setup, it carves through corners with absolute, laser-guided precision.
Electronics, Connectivity, and Cockpit Tech
The division between these two machines becomes incredibly clear when you evaluate their electronic tech packages.
The Yamaha YZF-R7 is a purist’s machine with zero rider aids outside of standard baseline ABS. There is no traction control, no ride modes, and no electronic wheelie mitigation. It relies entirely on old-school wrist control, making it a fantastic tool for riders looking to build pure mechanical racing skills.
The Aprilia RS 660, on the other hand, is a rolling tech showcase packed with Aprilia’s advanced APRC electronics suite governed by a 6-axis IMU. This array delivers features typically reserved for $20,000 superbikes:
- Lean-Sensitive Cornering ABS & Traction Control
- Adjustable Wheelie Control & Engine Braking Maps
- Up/Down Electronic Quickshifter (Standard)
- Five Distinct Riding Modes managed through a premium full-color TFT display dashboard.
Real-World Fuel Economy & Commuting Range
Because both packages utilize modern, highly optimized fuel injection sequences and lightweight frames, daily operating and gas station expenses remain remarkably low.
- Aprilia RS 660 MPG: Under mixed canyon carving and urban street commuting conditions, the high-revving Italian twin consistently returns a solid average of 46 to 50 MPG. Its 3.96-gallon tank capacity yields a comfortable cruising range of roughly 180 to 195 miles.
- Yamaha YZF-R7 MPG: The highly efficient CP2 engine core rewards riders with an outstanding real-world average of 52 to 56 MPG during steady highway cruising. Paired with a slightly smaller 3.4-gallon fuel reservoir, the R7 can comfortably cover 160 to 175 miles of continuous riding before requiring a gas station pitstop.
Aprilia RS 660 vs. Yamaha YZF-R7: BikeWikh Middleweight Sportbike Scorecard
| Performance Metric | Aprilia RS 660 Performance | Yamaha YZF-R7 Performance |
|---|---|---|
| Top-End Track Horsepower | Â (Blistering 100 HP Peak) | Â (Runs Out of Breath Early) |
| Low-End Street Torque | Â (Smooth, Linear Pull) | Â (Instant, Punchy CP2 Grunt) |
| Advanced Electronic Tech | Â (6-Axis IMU Superbike Suite) | Â (Raw Mechanical Pure Controls) |
| Daily Commuting Comfort | Â (Relaxed Street Ergonomics) | Â (Aggressive, Tucked Race Stance) |
The Verdict: Premium Italian Tech vs. Pure Japanese Grunt
Choosing between these two incredible middleweight supersports ultimately comes down to your personal budget and what you demand out of your cockpit.
Buy the Aprilia RS 660 if: You want an uncompromising, high-tech machine. Its blistering 100-horsepower engine, full 6-axis IMU electronic safety net, up/down quickshifter, and comfortable everyday ergonomics make it the ultimate premium twin-cylinder sportbike on the market.
Buy the Yamaha YZF-R7 if: You want a raw, bulletproof mechanical tool under $9,500. Its legendary low-end torque punch, aggressive pure-race riding position, low maintenance costs, and exceptional chassis feel make it the perfect weapon for track day purists and budget-conscious canyon carvers alike.
