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just replace the titainum valves with stainless & a
real piston with a skirt....
Those motors are stressed to the limit... a CRF250
has a detectable power loss after 5 hours use..
They are built to win races not last...
but the CRF dose seem to be the most fagile of
the jap 4T MX bikes..
..
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09 XT660R ...
06 TTR250 ...
80 Montesa H6 125 Enduro...
77 Montesa Cota 348 MRR "Malcom Rathnell Replica"...
Current resto projects..
81 Honda CT110...
80 Kawasaki KL250A1...
11 Husaburg TE125 enduro... "sold" along with another 31...
Lifan 125 Pitbike.. "stolen" ...
KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php
All the best offroad rides in NZ...
http://www.remotemoto.com/
E-mail... xtpete1@gmail.com
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