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HEAD-TO-HEAD OEM SPEC COMPARISON

Aprilia RS 660 vs Honda CBR650R — 183kg Exotic Twin vs Inline-Four Everyday Sportbike

ENGINEERING & RIDING VERDICT

Aprilia RS 660 dominates canyon and track carving at 183 kg wet with full 6-axis IMU electronics and 100 hp punch, while Honda CBR650R counters with silky inline-four acoustics, optional E-Clutch convenience, and bulletproof daily durability.

Side-by-Side OEM Specification & Fluid Matrix

Specification Aprilia RS 660 / Extrema Honda CBR650R / E-Clutch (RH01 / RH17)
Engine · Power · Torque 659 cc · 100 hp · 67 N·m 649 cc · 95.2 hp · 63 N·m
Seat Height & Wet Weight 820 mm (32.3 in) · 183 kg (403 lbs) 810 mm (31.9 in) · 209 kg (461 lbs)
Fuel Tank & Est. Range 15 L → ~306 km (190 mi) 15.4 L → ~314 km (195 mi)
Oil Capacity (With Filter) & Spec 2.3 L (2.43 US qt) · SAE 10W-50 JASO MA2 2.6 L (2.75 US qt) · SAE 10W-30 JASO MA
OEM Oil Filter 1A023538 / HF138 15410-MFJ-D01 / HF204
Tires & Cold Pressure (Solo) 120/70 ZR17 M/C (58W) / 180/55 ZR17 M/C (73W)
36 / 41 PSI (250/280 kPa)		 120/70ZR17 M/C (58W) / 180/55ZR17 M/C (73W)
36 / 42 PSI (250/290 kPa)
Spark Plug & Battery NGK MR9DI-7 (×2) · YTZ10S / LiFePO4 (Extrema) NGK IMR9E-9HES (×4) · YTZ10S / FTZ10S
Valve Check Interval 20,000 km 24,000 km

DIY Wrenching & Maintenance Cost Differences

RS 660 requires synthetic 10W-50 (2.3 L), an M20×1.0 fine-thread filter (1A023538), and a warm-ride unscrewed dipstick check; CBR650R uses 2.6 L of 10W-30, a standard M20×1.5 filter (HF204), and a simple crankcase sight glass.

Aprilia RS 660 / Extrema Full Specs → Honda CBR650R / E-Clutch (RH01 / RH17) Full Specs →
02 // ERGONOMIC & SPEC MATRIX

Interactive 1:1 Spec & Seat-Arch Footing Simulator

Calculates real-feel leg reach by factoring in thigh-splay seat arch width and dual-sport suspension sag—not just raw static seat height.

Metric (Rider Height: 173 cm) Aprilia RS 660 / Extrema Honda CBR650R / E-Clutch (RH01 / RH17)
Static Seat / Effective Arch Reach 820 mm → ~816 mm
Tip-Toe / One-Foot Stop Technique Advised		 810 mm → ~816 mm
Tip-Toe / One-Foot Stop Technique Advised
Displacement · Power · Torque 659 cc · 100 hp · 67 N·m 649 cc · 95.2 hp · 63 N·m
Wet Curb Weight 183 kg (403 lbs) 209 kg (461 lbs)
Fuel Tank & Est. Touring Range 15 L → ~306 km (190 mi) 15.4 L → ~314 km (195 mi)
Oil Capacity (With Filter) & Grade 2.3 L (2.43 qt) · SAE 10W-50 JASO MA2 2.6 L (2.75 qt) · SAE 10W-30 JASO MA
Cold Tire Pressure (Front / Rear) 36 / 41 PSI (250/280 kPa) 36 / 42 PSI (250/290 kPa)
OEM Spark Plug & Battery NGK MR9DI-7 (×2) · YTZ10S / LiFePO4 (Extrema) NGK IMR9E-9HES (×4) · YTZ10S / FTZ10S