Sunday 2025 Primer 18" - Bright Yellow

The Primer 18” is the ideal choice for riders who’ve outgrown a 16” but aren’t quite ready for a 20”.

 

The shorter chain stay, lighter wheels and size-specific, pro-style frame geometry makes it the go-to bike for serious BMXers in this size range. The Primer is packed with quality parts like Odyssey Springfield brakes and a fully sealed cassette hub for reliability that you can count on every time.

Features
- 18" Pro-Style geometry
- Sunday Freeze front load stem
- 9T cassette hub
- Sunday Cornerstone grips
- Odyssey Springfield brakes
- FSA headset
- KMC S1 chain

Specifications
Frame - Sunday 'Primer', 18.5" top tube, integrated 1-1/8" head tube 
Fork - Sunday 'Primer', 18" fork w/ 2-piece steerer tube and welded pre-load 
Handlebar - Sunday, 2-piece 
Stem - Sunday 'Freeze' front load, 48mm 
Headset - FSA integrated, 1-1/8" 
Alloy Cap - FSA aluminum cap 
Brake Lever - Aluminum, U-brake compatible 
Brakes - Odyssey 'Springfield' U-brake 
Brake Cable - Odyssey 'Quik Slic' 
Grips - Sunday 'Cornerstone' 
Seat - Sunday 'Badge', seat and post combo 
Seat Post - Integrated 
Seat Clamp - Sunday 
Sprocket - Sunday 'Sabertooth v2', 25T, steel 
Cranks - 140mm, 3-piece, Cr-Mo 
BB Parts - Sealed, Mid, 19mm 
Pedals - Wellgo platform, plastic 
Rims - P-7X aluminum, 18", 28H 
Front Hub - Sunday, 28H, low-flange, loose-ball, 3/8" axle 
Rear Hub - Sunday, 28H, sealed, 14mm axle w/ 9T Driver 
Spokes - 14g steel, black 
Tyres - Sunday 'Current', 18 x 2.2" (F & R) 
Chain - KMC S1
Approx. Weight - 10.5kgs (with brakes)