The Yamaha YZF-R1S is the weapon of choice for riders who want a sport bike primarily for canyon carving and commuting.
The YZF-R1S is meant to be the most affordable of the three superbike models and to this end, its engine has undergone several changes. The titanium connecting rods in the inline four-cylinder powerplant have been exchanged for steel ones that weigh 60 percent more, therefore requiring some work on rebalancing the crank shaft. As a result, the R1S has a lower maximum rotation level and subsequently outputs less peak horsepower. Yamaha has not yet disclosed any specific horsepower figures, although on the Canadian website the announced torque output of the R1S is precisely the same as the R1 and R1M – 83.2 ft-lbs (11.5 kg-m) at 11,500 rpm.
Enter the YZF-R1S: the YZF-R1 to address the real world needs. Priced at $14,990 (Rs 9.75 lakh approximately) in the USA, the YZF-R1S is $1500 (Rs 97,500 approximately) less than the YZF-R1 priced at $16,490 (Rs 10.72 lakh approximately).
In line with the cost cutting agenda, the S version gets steel replacement for the exotic titanium bits like the fracture-split connecting rods and exhaust header. Aluminium parts will be used in place of the magnesium bits like the oil pan, engine cover and the wheels. This means the S gains nearly 4 kg translates to a drop in power and torque figures, but Yamaha have been tight-lipped about these. The race-spec Bridgestone Battlax RS10 tyres will be replaced with Bridgestone Hypersports S20. The S will also lose the quick-shifter but will be available as an optional.
On the brighter side, the electronics package remains the same and that means the IMU (Inertial Measurement Unit) will be retained. The manually-adjustable KYB suspension also find their way on the YZF-R1S which make it a compelling buy.