Is this an improvement over Phil wood? I'm having slippage with Phil as the grit is very fine.

I've used the Finish Line Assembly Gel on many different surfaces as a torque value reducer, and so far I haven't had any slippage problems - fiber to fiber, fiber to steel, fiber to aluminum or even steel to steel and aluminum to aluminum. For each assembly I am at or below the max torque values for the given part with no slippage. Granules in the prep are like the sand you get in your shoes at the beach or medium to fine grit sand paper.

Will this work on seatposts mage from forged aluminum ?

Yes, works with any metal or carbon fiber. A very good product indeed. I used it to fix a creak on my carbon fiber seatpost on alluminum frame and works perfectly, no problem since.

Would this be good on a press fit bottom bracket as well?

Fiber grip is designed for carbon to carbon fittings. Assuming your b/b cups are not carbon, rather aluminum, this is probably not a good fit. Talk to a shop.

Does it worknon steel?

It will work on steel, but be sure it is what you want. Steel parts can handle more torque, so they usually don't need extra friction compound. Also, steel often benefits from some lubricant, which is the opposite of this stuff.

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🛠️ Grip smarter, ride stronger — protect your carbon like a pro!

TRUSTED BY EXPERTS - Slip resistance validated by renowned carbon parts manufacturers for guaranteed performance.
COMPACT EFFICIENT - 50g tube delivers long-lasting application with minimal waste—perfect for precision maintenance.
ENHANCED GRIP TECHNOLOGY - Boosts friction on slippery carbon fiber surfaces, ensuring a secure hold on stems, handlebars, and seat posts.
ULTIMATE CARBON PROTECTION - Safeguards your high-end carbon components from fatigue and internal cracks caused by overtightening clamps.
EASY APPLICATION MAXIMUM IMPACT - Apply lightly to critical tightening areas for superior grip without compromising material integrity.

FINISH LINE Fiber Grip is a 50g high-performance friction enhancer designed specifically for carbon fiber bike components. By increasing surface friction, it prevents damage from overtightening clamps on stems, handlebars, and seat posts. Tested and trusted by leading carbon manufacturers, this formula ensures secure, slip-resistant connections that extend the life of your premium carbon parts.

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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Model Number	F01750101
Size	50g
Material	Carbon Fiber
Usage	Prevent Corrosion
Batteries Included	No
Item Volume	0.05 Liters
Style Features	Fast Shipping
Product Dimensions	16 x 16 x 12 cm; 45 g

FINISH LINE(フィニッシュライン) ファイバーグリップ 50g TOS07800

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