...there lurks the skid demon
Some good advice there Mr. Pony, but I thought that if you run a smaller sprocket on the rear (47 Vs. 49) you would get more top speed and slower starts??? So a larger rear would give you less top speed and quicker starts, right? Which is why stunt guys have those huge rear sprockets...Originally Posted by Flyingpony
When pondering this, I just think about the gears on a mountain bike...
Keep it rubber-side down...
Hardcore Biker
The smaller rear sprockets makes the gearing slightly higher, impact of 2-4km/hr. Higher gearing means the engine has to work more for the same speed. Unfortunately the FXR doesn't have much strength in reserve, so this slight change away from factory can have a negative impact.
Before the sprocket gearing change, getting over 100 was piss easy, now it needs more work and slows down more rapidly when suddenly hitting head wind. For motorway speeds I feel this gearing is a disadvantage, but around town it rocks, I'm mostly riding around town so it's excellent for me. Off the mark is quicker because it can stay in a given gear for slightly longer and go slightly faster.
Another factor to keep in mind, Suzuki fixed a fault early on and this has made it run leaner so probably isn't producing all of its full potential power.
90% of the time spent writing this post was spent thinking of something witty to say. It may have been wasted.
Hardcore Biker
Your welcome. I'm very happy with the Loobman and will be posting up a 1 year anniversary next month.
Ended up fitting aftermarket parts.
Front: $12
Front sprocket spacer: $3
Rear: $42
KMC brand o-ring 428 chain: $63.
Plus labour
Purchased parts and got fitted at Budget Motorcycles in Chch. Some parts had to be sent down from Auckland so you shouldn't have any troubles.
It's a good idea to have your bike with you when getting quotes done, they'll want to measure the sprockets if part numbers are unknown. I've kept the original worn out sprockets to save me this hassle next time.
Chain has got 130 links, or was it 128? Don't really remember right now, it's in the manual. New chain definitely didn't need to be extended or shortened.
Only had one aftermarket choice for rear sprocket after being unable to find brand/company named ACC Sprockets.
Finding the front sprocket & chain were easy, but finding the correct sized rear sprocket was hard - it has to fit over the rear wheel axle hub thingy. Fortunately the nut hole arrangement fitted perfectly.
You could go one chain size up, 520, there are more options, but a 520 chain has got more mass (weight) in it and this might rob power from the drive train. It might also not fit in relation to clearances here and there.
90% of the time spent writing this post was spent thinking of something witty to say. It may have been wasted.
Why Not???: MNZ975.
Hi ya bobsmith
FXR150 run a 428, try a RK or DID (around $90) though there are cheeper ones around. original rear sprockets are expensive but a honda XR50-100 sprockets also fit the rear hub, (lots of looking for my bucket racer), all you have to do is drill out the M6's to M8's mounting bolts very easy and they are cheep as $45-50.. front should be around $25 max, replace all the sprockets and chain at the same time. replace the rear hub nuts with some lock nuts ($5) and you'll never have any problems with them coming undone. keep the chain well oil'ed and if you don't buy a o-ring chain that it off and clean it every few months (esp if you are riding around gravel roads).
edit:The prevous post is cheeper, we must have been writing it at the same time
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