Oi Prima Bike Bell

$32.99 USD

Oi Prima bike bell features our signature wrap-around bell design and our newest innovation - WAVETEK hammer technology. The whip of this new hammer design helps to create a beautiful and consistent bell tone, while being built for robust and long-lasting use. Available in two sizes to ensure the correct fit on your handlebar (see our size guide for info on how to measure your bar diameter).  

Oi Prima bike bell features our signature wrap-around bell design and our newest innovation - WAVETEK hammer technology. The whip of this new hammer design helps to create a beautiful and consistent bell tone, while being built for robust and long-lasting use. Available in two sizes to ensure the correct fit on your handlebar (see our size guide for info on how to measure your bar diameter).  

Handlebar Diameter
Color
  • Our signature wrap-around design.
  • WAVETEK - the latest in bell technology.
  • Built to last with a robust spring design.
  • Beautiful tone that's loud but pleasant.
  • Available in two sizes for a perfect fit (see below).

 

  • Small Oi Prima for 22.2mm handlebars diameter.
  • Large Oi Prima for 23.8 - 31.8mm* handlebar diameters.

*Shims / Spacers included with all Large size bells for the perfect bar fit. Consult our size guide for more information.

  • Oi Prima Bell
  • Hex Key
  • Shims - Spacers for the perfect bar fit. Large size bells only.

Free shipping to Continental USA on orders over $65 and just $8 on orders under $65. We'll ship it asap, and have it delivered within 2 - 5 business days.

Need Knog delivered by December 24th? Order by Tuesday 16th December 2025.

Returns & Exchanges

We stand behind everything we make and want you to be happy. If for any reason you're not satisfied with your purchase, return it within 30-days for a full refund. We'll even pay the shipping. For more information, please see our Returns & Warranty page.  

Shipping on Knog's US website is available to Continental USA customers only. If you're shopping from another location, please visit our international store.

Customer Reviews

Based on 54 reviews
54%
(29)
19%
(10)
17%
(9)
2%
(1)
9%
(5)
G
Glen Gollrad
Sharp design, function, and sound

Perfect bell - it snugs up next to all the controls on your handlebars without being obtrusive, but still easy to access. Sounds amazing - hikers / walkers appreciate the crisp but nice tone.

S
SHILOH Wolfe
Love the tone

Best sounding bell I have heard

F
Florina Geroff

I haven’t used the bell. I’m giving it to someone for Christmas. Package looks pretty good

C
Christopher Foxing
Pretty good, but ring isn’t always consistent.

I love the minimalist profile of the Oi Prima bike bell, and the color blends right in with my bike’s handlebars and the profile doesn’t interfere with any gear.

The one complaint I have is it’s difficult to strike the bell in a way that makes the actual bell sounds consistent, or at a consistent volume. This makes it more of a nice perk when it works, versus consistent communication equipment.

M
M.K.

Discreet and stylish but the Luxe bell emits a stronger and nicer sound.

"RE-ENGINEERED DESIGN FOR PERFORMANCE AND LONGEVITY"

Subtle, until you strike it.

Every feature is fine-tuned for clarity, durability, and effortless installation.

WAVETEK

The innovative Oi Prima WAVETEK hammer delivers a louder, longer-lasting, and more consistent chime. The subtle wavelike motion creates a crisper, clearer tone that rings at 80+ decibels.

REFINED AESTHETIC

Every detail is meticulously considered. From tapered edges - inspired by the aerodynamic intake of a jet engine - to the minimalist silhouette and intricate laser etching.

ROBUST BUILD

The hinged clamp system makes installation quicker, easier, and secure whilst the bell's spring remains hidden within and can’t be overextended for a cleaner look that is engineered for lasting strength.

BEAUTIFUL SOUND

Loud enough to cut through traffic and trail noise, but tuned to be pleasant. The improved hammer and striking surface work together to produce a crisp, clean and considerate sound.

CRAFTED BY A TEAM THAT REFUSE TO SETTLE

Join us in The Lab, with Knog's Design Director, Anton Van Maanen as we chat about why design should always go the extra mile.

‘It's very loud. It's very good-looking.’

Technical Specifications +-

WEIGHTL: 28 g / 0.99 oz,  S: 20 g / 0.7 oz
DIMENSIONS
L: H:  15 mm x W: 50 mm x L: 67 mm, S: H: 14 mm x W: 38 mm x L: 57 mm
FITS BAR WIDTHL: 23.8 - 31.8 mm bars, S: 22.2mm 
HAMMER TYPEGF Nylon and TPU
AERO BAR COMPATIBLENo

User Guides +-

Language Download
Oi Prima - English