Here's a spec chart for the V-strom 650 and RX3. The third column shows how removing the RX3's stock engine bars and luggage affects the power and torque to weight ratios.
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V-strom 650 RX3 RX3 (No luggage)
Seat Height (in) 32.9 31.3 31.3
Curb Weight (lbs) 472 386 340
Engine Size (cc) 645 250 250
Fuel Economy (mpg) 60 65 70
Fuel Capacity (US gal) 5.3 4.2 4.2
Range (miles) 318 294 294
HP 64.0 24.8 24.8
Torque (ft-lb) 44.3 16.6 16.6
Power to Wt (HP/lb) 0.14 0.06 0.07
Torque to Wt (torque/lb) 0.09 0.04 0.05
Power to cc (HP/cc) 0.10 0.10 0.10
Wheelbase (in) 61.4 55.1 55.1
Ground Clearance (in) 6.9 8.3 8.3
Front Wheel (in) 19 18 18
Rear Wheel (in) 17 17 17
Front Travel (in) 5.9 5.1 5.1
Rear Travel (in) 6.3 5.6 5.6
MSRP ($ US) $8,549.00 $3,495.00 $3,495.00