Join Date: Aug 2011
Location: southern Arizona, USA
Thanked 408 Times in 317 Posts
In general, the shifting speeds listed in the owners manual are for a single rider, on flat terrain, and are the lowest safe speeds for shifting.
On a 250 cc motorcycle, I like to keep the engine above 1/2 of the red line value, except for starting from a stop and possibly on the 1st to 2nd shift (2nd gear is at just under 1/2 of redline after the shift).
I used that guideline for years on my NX250 with great success. I admit running above 1/2 and closer to above 3/4 red line (actually the limiter as it has no tach) on my CRF230L, but it is an air cooled engine with lower compression and a lower red line.
John: '09CRF230L (Li'l Red Piglet), '89NX250 (sold)
Propelled by Penguin Power
Nekkid motorcycles feel faster
1st bike: a gently used 1958 Matchless 250 thumper
Last edited by jsonder; 08-20-2017 at 12:56 AM.
Reason: explain 2nd gear thing better.