Don't worry. DTRX's don't derestrict that well anyway. It's still very restricted. Rag away. It'll fail because it's over due piston change or oil change.
Wouldn't worry about it too much, not like you derestrict and suddenly it's gonna be as reliable as an mx bike. Like cal said they don't really rev over 10/11k anyway so you can't really do much damage like that
Ok cheers guys, yeh like victor said ive got low gearing, its because i was pinned second, but when i shift to 3rd it just about strokes the band... Was worried that if i held it in 2nd pinned all the way up whether it would damage it
Same bike as me. It was stolen and ragged with little/no oil for 365 miles. Got it back and it started fine. No scoring to the barrel. As said they're heavily restricted the newer ones. Even derestricted the top end is still heavily restricted. And the mid range. A zeeltronic showss all.