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2015 CBR Repsol SP
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The CBR1000RR SP uses a 525 chain, I switched to a 520 GP 3D chain and it weighed exactly the same. So you might save a little weight on the rear sprocket but maybe just a bit on a 530 chain conversion. My 520 GP 3D chain weighed 4.1 pounds so weigh your chain before doing the conversion so you will know the weight savings and won't be disappointed.
I did weigh my 525 x 98 link chain from my 1198SP at 4.0 lbs and the 3D520GP 520 x 98 links at 3.4 lbs, so a savings of 0.6 lbs high speed kinetic weight. It’s a really big deal if your doing serious weight savings.

Maybe you weighed the 3D at full new 120 link length?
 

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Discussion Starter · #102 ·
Yes I weighed the 3D chain at the 120 length then removed 3 to 4 inches. I don't think that could be .6 lbs, may .1 lbs.
At any rate, the weight reduction with the carbon fiber wheel was some serious weight loss, even if the chain didn't weigh much less, the chain had to be replaced with the new rear sprocket to fit the BST wheels so might as well do it right. :)
 

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Discussion Starter · #103 ·
This past Saturday I replaced the Black plastic air duct covers with Carbon Fiber ones. Pulling the lower fairing is pretty quick, I've done it a few times to change the oil and filter, counter shaft sprocket, etc. Removing the middle fairing is a bit of a pain but after you do one side the other side is the same and goes faster. Might have lost a few grams but this was more for looks.
I am looking the the Charcoal canister cover in Carbon fiber but no one seems to make it. Maybe they figure most will just remove the emissions stuff, but I am in Kalifornia where if they stop you they often look for other issues, and modifying the emission system is a big fine, and you have to restore the systems to be able to register and ride it again.
 

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Discussion Starter · #105 ·
Today I received the Frame hole covers in carbon fiber. Took off the stock plastic ones, weight 28 grams, carbon fiber part 28 grams. Wasn't expecting much in the weight loss department, the part is so small, economies of scale. And the front inside hook on the new part needs a little work with the die grinder to fit properly so a few more minutes work and I can mount them. Next up, a few more titaniium bolts, then the rear seat cowl small cover in CF.
 

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Discussion Starter · #106 ·
I had ordered the rear seat cowl from the same company as the Frame hole covers, before I had received the hole covers. They were over trimmed so don't fit as close to the frame as the stock units. Today I received the seat cowl, in Carbon Fiber, and when I tried to mount it I found that the tower with the loop that fits into the seat lock was at a slight angle so the cover sat with a tilt when installed. It will require cutting the tower on one side so the tilt can be corrected and then glassed in place. The Cowl is also a little over trimmed at the edges.
I sent an email to the seller and will report back on their response.
 

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Discussion Starter · #107 ·
So the selling offered 10% refund for my modifying the part, good enough. I will have a lot of work with the die grinder to get the tower structure loose from the cover then rebond it straight.
 

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Discussion Starter · #109 ·
Wednesday I picked up a new helmet, a Aria Corsair X with a tinted face shield. Awesome helmet. Made for some fun rides these past couple days. Good riding weather in Souther California, sunny, a mild Santa Ana wind, great riding temps.
 

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Discussion Starter · #110 ·
Friday I replaced the lower 4 triple clamp bolts, 8mmx1.25x45mm with titanium bolts, stock steel 17.5g, titanium 11g. Have upper triple clamps and clip-on bolts coming 8mmx1.25x 40mm, and front axle pinch bolts 8mmx1.25x35mm on the way. Will remove almost 3 ounces, wow. :) But almost all the front end larger nuts and bolts are, or will be, titanium. After I get and install the Carbon Fiber subframe and under fender I will have to weigh the bike again, it is already under 420 pounds.
 

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2015 CBR Repsol SP
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It certainly adds up to a significant weight loss when that’s your ultimate goal. You can replace all the light load fasteners with aluminum as well.

Back when economic times were better, a company named TPO Parts did all their fastener & fab work in-house. They had great titanium parts that others did not. Like axles, engine mount bolts, swingarm pivots, etc. My Big Dog Ducati benefits from all those (now one-off) parts, so it is unusually light for a street bike at 397lbs. TPO closed up a few years ago and are sorely missed. Pro-Bolt has tripped in to continue selling mass produced titanium and aluminum, but not the really special parts. Those types of fasteners aren’t available for the CBR unless you buy the titanium stock and make it yourself. I’m not quite there yet!
 

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Discussion Starter · #112 ·
Have to Change my oil next month so I purchased Titanium w/magnet drain plug. :)
And today I tripped the Odometer from 9999 to 10000 miles, Hmm, that's only 167 miles a month, I need to ride more, but it is only 4.7 miles to work.
 
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