$5895 for RX4

sqwert · 11-12-2018, 09:03 PM

I've never seen a Chinese bike anything like a TW. I've seen a few with similar basic engine designs, but not clones. That's about like saying a TW and a TT-R and a XT are identical, but they are not even close.

If Zong uses a bigger bore on a copy of the TW200 crank to get to 250cc they will probably have to relocate the cylinder/head studs to fit a liner for a cylinder that big, and that means totally different cases. Yamaha went from 200cc to 225cc with a stroker crank and a bigger bore. Maybe Zong copied the TW225, which uses the same stroke and bore as the XT225 and TT-R230. I don't really know, and apparently, neither does anyone else.

11-12-2018, 09:03 PM	#11
sqwert Join Date: Jun 2017 Posts: 382	I've never seen a Chinese bike anything like a TW. I've seen a few with similar basic engine designs, but not clones. That's about like saying a TW and a TT-R and a XT are identical, but they are not even close. If Zong uses a bigger bore on a copy of the TW200 crank to get to 250cc they will probably have to relocate the cylinder/head studs to fit a liner for a cylinder that big, and that means totally different cases. Yamaha went from 200cc to 225cc with a stroker crank and a bigger bore. Maybe Zong copied the TW225, which uses the same stroke and bore as the XT225 and TT-R230. I don't really know, and apparently, neither does anyone else.
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