The new 650 sra and i models 633 cm have higher compression 9.9:1 but 34mm carbs
The 750i, 749 cm has 8.8:1 and larger 36mm carbs throttle body fuel injected
The old prairies 650's and 700's had 9.9:1 compression but smaller 32mm carbs.
The BF 750's 05-07 had 8.8:1 and 34 mm carbs.
The BF 650i's 05-07 had 9.9:1 and 34 mm carbs that's why some thought the 650i was better.
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Brute Force AMR 840, 4X cams, extended rockers, Big Kev's Performance Full race port, +1.5mm intake valves, +1 mm exhaust valves, muzzy pro, 39mm carb, programmable dynatek cdi, triple snorkeled airbox, Boss Noss wet nitrous, JHmachine clutch (RIP JIM)
2010 Polaris 850XP EPS sweet ride for aging bones
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