Flush mount bolts appear on stem face plates, derailleur hangers, and seat clamp collars. Steel bolts tend to seize in aluminum. TiNE Grade 5 Ti-6Al-4V stem bolts (2.0-3.3g each) resist seizing far better than steel. M5 hanger bolt upgrade also available. 8 anodized colors.
Shimano rear derailleur bracket uses a steel pivot screw that corrodes and seizes into the aluminum body. TiNE Grade 5 Ti-6Al-4V pivot screw weighs 2.0g (vs ~8.4g stock), roughly 6.4g lighter, resists seizing far better. Full bolt-set upgrades save roughly 54-108g across Shimano groupsets.
Rear derailleur limit screws set the outer boundaries of chain travel. Misadjusted, the chain drops off. Here is what riders ask most.
Which Screw Is H and Which Is L?
H: Limits travel toward the smallest cog. Too loose = chain drops off. Turn clockwise to restrict.
L: Limits travel toward the largest cog. Too loose = chain overshoots into spokes. On Shimano rear derailleurs H is upper, L is lower.
How to Set Rear Limits
Disconnect cable. Shift by hand to smallest cog, adjust H to center the jockey under it. Push to largest cog, adjust L to center under it. Reconnect cable, then B-tension and indexing. Limits first.
Pivot Bolt Weight Savings
System
Stock
TiNE
Saved
105 R7170
177.3g
68.9g
108.4g
Ultegra R8170
148.5g
59.3g
89.2g
DA R9270
113.7g
59.3g
54.4g
Grade 5 Ti-6Al-4V · Full pivot sets · CNC · 8-color anodized
FAQ
Do limit screws affect shift feel?
No — boundaries only. Cable tension and B-tension control shift quality.
Can I swap pivot bolts without affecting shifting?
Yes — match thread and length. Pivot bolts are fasteners, not adjustment parts.
When to recheck limits?
After new derailleur, cassette size change, or hanger bend. Otherwise they hold.
TiNE Rear Derailleur Hardware
tinetech.com
Pivot Sets · Shimano 105 / Ultegra / Dura-Ace · 8 Colors
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