the importance of the new engine “break-in” period

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I bought a new motorcycle today (brand new, odometer read 0) and about 3 hours into a VERY cold ride home, my numb extremities failed me. I missed a shift and redlined it pretty hard.

While everything seems fine, it got me wondering: apart from the obvious risk of instant catastrophic failure, what are the “later in life” repercussions of such abuse during the break in period, and how do they differ from abusing an engine later in its life?

In: 44

24 Answers

Anonymous 0 Comments

Worst stresses are high throttle with low rpm (high load). Momentarily hitting redline with a bad shift (probably 0 load) on an engine that’s already well warmed up probably did nothing. So I wouldn’t worry

Anonymous 0 Comments

This is a myth that just wont go away.

Cars are broken in at the factory before being delivered to the customer.

The new car you bought has already been broken in.

Anonymous 0 Comments

This is a myth that just wont go away.

Cars are broken in at the factory before being delivered to the customer.

The new car you bought has already been broken in.

Anonymous 0 Comments

This is a myth that just wont go away.

Cars are broken in at the factory before being delivered to the customer.

The new car you bought has already been broken in.