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, chromoly 
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)

Frame Geometry 
Top Tube Length - 18.5" 
Head Tube Angle - 74.5° 
Seat Tube Angle - 71° 
Chainstay Length - 11.7-12.00” 
Bottom Bracket Height - 10.35" 
Standover - 7.5" 

Handlebar Geometry 
Rise - 7.65" 
Width - 25.5" 
Backsweep - 12° 
Upsweep -