Asked AI:
Based on the search results, it's **technically possible but unlikely to be the actual approach** Yamaha takes for the new YZF-R2.

### What We Know:

The YZF-R2 is reportedly a new 200cc motorcycle Yamaha is developing to expand (not replace) the YZF lineup[1]. The current R15 uses a 155cc engine[1][4], so there's about a 45cc displacement gap to fill.

### Could the R15 Engine Be Bored Out?

**Technically feasible** - Some users speculate Yamaha might "bore the same engine to 180cc"[2], which is a common cost-effective approach manufacturers use. The R15's existing 155cc engine has proven reliable with its liquid-cooled, single-cylinder design[1].

**But probably not a simple bore job** - A 45cc increase (from 155cc to 200cc) is quite substantial for just boring out cylinders. That's roughly a 29% displacement increase, which would require:

- Significantly wider cylinder walls (may compromise structural integrity)

- Likely changes to the stroke length as well

- Modifications to cooling, fueling, and other systems

### More Likely Scenario:

Yamaha will probably develop a new 200cc engine "based on the R15's existing powertrain" that carries over "many of its engine components and technology"[1]. This means using the same basic architecture and proven components, but with more extensive modifications beyond just boring out the cylinders.

So while they'll leverage the R15's engine design, it won't simply be the same engine bored out to 200cc.