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Eternal Topcap

Row of eleven round Oak-branded bike parts in various colors with embossed text and circuit patterns.
Close-up of mountain bike handlebar with black textured bars, red stem cap, and green frame with FORTY decal
Gold OAK topcap and silver screw on topographic design card with OAK Components stickers and QR code cards.
Close-up of a matte black bike handlebar and stem cap on a green frame with white accents and brake cables
Close-up of a mountain bike handlebar and stem with a golden FORTY top cap and green frame with white decals.
Black bicycle handlebar with an orange FORTY cap and silver bolt on a green frame with white patterns.
Close-up of mountain bike handlebar with black grips and gold engraved stem cap on dark green frame.
Close-up of a black bicycle handlebar with a green 'FORTY' top cap and a dark green frame with white geometric patterns
Close-up of black matte ROK bicycle handlebar mounted on dark green frame with white geometric lines and silver bolts
Close-up of FORTY mountain bike handlebar and stem, silver faceplate, dark green frame with white decals.
Black mountain bike handlebar with purple FORTY top cap and dark green frame with white geometric patterns
Top view of black FORTY mountain bike handlebar with blue clamp and green frame featuring white geometric design
Close-up of a black textured mountain bike handlebar and stem with alignment marks on a green frame with white accents
Row of eleven round Oak-branded bike parts in various colors with embossed text and circuit patterns.
Close-up of mountain bike handlebar with black textured bars, red stem cap, and green frame with FORTY decal
Gold OAK topcap and silver screw on topographic design card with OAK Components stickers and QR code cards.
Close-up of a matte black bike handlebar and stem cap on a green frame with white accents and brake cables
Close-up of a mountain bike handlebar and stem with a golden FORTY top cap and green frame with white decals.
Black bicycle handlebar with an orange FORTY cap and silver bolt on a green frame with white patterns.
Close-up of mountain bike handlebar with black grips and gold engraved stem cap on dark green frame.
Close-up of a black bicycle handlebar with a green 'FORTY' top cap and a dark green frame with white geometric patterns
Close-up of black matte ROK bicycle handlebar mounted on dark green frame with white geometric lines and silver bolts
Close-up of FORTY mountain bike handlebar and stem, silver faceplate, dark green frame with white decals.
Black mountain bike handlebar with purple FORTY top cap and dark green frame with white geometric patterns
Top view of black FORTY mountain bike handlebar with blue clamp and green frame featuring white geometric design
Close-up of a black textured mountain bike handlebar and stem with alignment marks on a green frame with white accents

Eternal Topcap

High-quality engraving

Visual highlight on the cockpit

Available in 12 colors

€19,99
Tax included.
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OAK Eternal stem and any other commercially available stem.

1x Eternal Topcap
1x Screw for Topcap
1x OAK Sticker Pack

CO2-neutral shipping in eco-friendly packaging.

Dimensions Topcap Screw:
Screw DIN 7984 A2 M6x35 Pan Head Screw with AF4

Weight:
Topcap: 6.4g
Topcap with Topcap Bolt: 14g

Made in Europe
Aerospace Aluminum
100% CNC-milled

Works well together

Close-up of black bicycle handlebar with silver stem and blue 'LOCK' cap on purple mountain bike frame.
Close-up of mountain bike front suspension fork with blue adjustment knobs, black handlebar, and purple frame

OAK for your cockpit

Unique engravings make our Eternal Topcap magical.

Paired with the best possible manufacturing quality, the OAK Components top cap becomes an absolute eye-catcher on your bike.

The headset cap fits perfectly with our Eternal Stem, but also with any other commercially available stem.

When you purchase our stem, the top cap is already included and perfectly complements the overall look of your cockpit, tone in tone.

Consistancy

In the Lab:

In the lab we performed 92 full-power stops in 16 minutes, with no time to cool down. The orange line shows the brake disc heating up from 44 °C to over 300 °C; the red line shows the braking force the pad delivers on every single stop. It stays virtually flat: 91 out of 92 stops fall within ±10 % – the last stop decelerates just like the first.

16 minutes full load

In the Lab:

This is the complete test run in real time: on each of the 113 stops the speed drops (blue) and the brake pressure rises (green), while the disc temperature (red) climbs to around 300 °C and stays there. The pad therefore works at red-hot temperatures for 16 minutes straight – a load equivalent to a long, steep descent with no recovery.
The conclusion: The Hyperstop Pads stays constant and predictable even in the most challenging riding conditions.

FAQs

Mountain biker wearing helmet and gear rides swiftly through wooded trail, motion blur on bike and trees.

Team OAK

From bikers for bikers

Our engineers are dedicated mountain bikers themselves, and their OAK developments maximize the fun and performance of every descent. We incorporate product feedback from customers around the world to ensure we offer the best possible parts.