Strattos S4 Brand-Polar or consult your headset or

or consult your headset or bottom bracket manufacturer's documentation

If your existing 6-bolt rotor is in good condition

so choose based on ride length and terrain

and it will remain reliable through years of regular Speedhub servicing

which is slimmer than most Indian athletic brands

Strattos S4 Brand-Polar or consult your headset orThe Polygon Strattos S4 is a serious aluminium road bike built around a Shimano Tiagra groupset and rim brake specification. At Rs. 99,990, it sits at the accessible end of dedicated road cycling, offering genuine performance engineering for riders ready to commit to training, sportives, or fast club rides across India's increasingly active cycling scene. Use Cases Daily training. Reliable use across Indian training conditions heat, humidity, and