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TITANIUM sprocket bolt
Part number: 90125-KA4-000
Also part no:90125-MN1-671
These bolts bolt the rear sprocket to the rear wheel. They have an M8 x 1.25mm thread. They’re an exact replica of the original steel part but in Grade 5 titanium, so they won’t rust as strong and 40% lighter than the original part.
A 6mm allen key fits the head.
Standard bolt weight: 15.1grams
Titanium bolt weight: 8.5grams
weight saving: 6.6grammes
Six of these will save 40grams plus it’s revolving mass so helps the bike accelerate and stop faster.
If you’re buying the nuts with the 6 bolt set they’re also grade 5 titanium.
If you buy the 6 bolts and nuts the total weight is 79grams
1 bolt, 1 bolt + nut, 2 bolts, 2 bolts+nuts, 4 bolts, 4 bolts+nuts, 6 bolts, 6 bolts+nuts
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