CFMOTO 750SRS
By Ben Purvis
China's motorcycle industry is continuing its breakneck pace of evolution with CFMOTO joining the growing ranks of brands offering a high-performance four-cylinder machine in the form of the new 750SR-S.
Only the company's second four-cylinder, following on from the appealing 500SR Voom retro sports bike that's sold in Asian markets and Australia, the 750SR-S is a much more serious sports bike, with performance that promises to put it into competition with a number of middleweight European and Japanese rivals.
Sharing the same 72 mm bore as CFMOTO's existing three-cylinder 675SR-S, but adding another cylinder and pairing it with a shorter 46 mm stroke instead of the triple's 55.2 mm, amounts to a 749 cc four with a similar bore/stroke ratio to classic 750 cc race-reps like the 1990s Suzuki GSX-R750 SRAD and Yamaha's YZF750R of the same era. However, CFMOTO is starting out with a conservative 110 hp from the 750SR-S, arriving at a relatively low 10,250 rpm.
The four-cylinder engine has Continental's two-mode cornering traction control. The six-axis inertial measurement unit also enables lean-sensitive Continental ABS brakes paired to Brembo 4.32 monobloc radial callipers on 320 mm front discs and a 220 mm rear rotor with a two-piston Brembo calliper.
There's also a pair of aero cowls around the front brake discs, directing airflow to the callipers, and the bike is claimed to be wind tunnel-developed - with photos showing it in the Pininfarina wind tunnel that, famously, was used to sculpt BMW's R 100 RS in the 1970s, creating the world's first fully-faired production bike in the process.