The special editions arrive unabated from KTM. This just in—the 2021 KTM 250 SX-F Troy Lee Designs. This is not merely a graphics kit slapped on the orange plastics. Many performance enhancements make this a legitimate special edition. Let’s go over them.
1. An Akrapovič muffler is slipped on at the end of the exhaust system. KTM claims the Akrapovič muffler enhances low-rpm torque. Also, due to its titanium construction, it lightens up the rear end of the 250 SX-F.
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https://ultimatemotorcycling.com/2020/10/09/2021-ktm-250-sx-f-troy-lee-designs-first-look-12-fast-facts/
