Sunday 2021 Primer 18" BMX Bike (18.5" Toptube) (Black)

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Price: $369.99
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The 2021 Sunday Primer 18" BMX Bike bridges the gap between the more common 16" and 20" wheel sizes that leave many riders on a bike that doesn't fit right. Riding something that is either too small or too big makes learning new tricks next to impossible making the 18" wheel size an amazing addition to the Sunday lineup. The Primer 18" is built with components that create a ride that is both durable and low-maintenance, an amazing combination for riders wanting a no nonsense bike.

Frame: Sunday Primer, Integrated Headtube
Fork: Sunday Primer, 2-Piece Steerer Tube, Welded Preload
Bars: Sunday, 2-Piece
Stem: Sunday Freeze Front Load (48mm)
Headset: FSA Integrated (1-1/8")
Grips: Sunday Cornerstone
Cranks: 3-Piece, Chromoly (140mm Length)
Bottom Bracket: Sealed Mid (19mm)
Pedals: Wellgo Platform, Plastic
Chain: KMC S1
Sprocket: Sunday Sabertooth v2, Steel (25 Tooth)
Front Hub: Sunday Low-Flange Loose Ball (3/8" Axle)
Rear Hub: Sunday Sealed Cassette (14mm Axle)
Driver: 9 Tooth
Spokes: Steel, Black (14 Gauge)
Front Rim: P-7X, Aluminum (18") (28 Hole)
Rear Rim: P-7X, Aluminum (18") (28 Hole)
Front Tire: Sunday Current (18 x 2.2")
Rear Tire: Sunday Current (18 x 2.2")
Seat: Sunday Badge (Combo)
Seat Post: Combo
Seat Clamp: Integrated
Lever: Aluminum (U-Brake Compatible)
Brake Cable: Odyssey Quik Slic
Brakes: Odyssey Springfield U-Brake
Brake Mounts: Welded
Gyro Tabs: Drilled
Extras: N/A
Color: Black
Weight: 23.3 lbs

Frame Geometry:
Toptube: 18.5"
Headtube Angle: 74.5°
Seattube Angle: 71°
Chainstays: 11.7" - 12"
BB Height: 10.35"
Stand Over Height: 7.5"
Sizing Guideline: 4' - 4' 10" Rider Height

Need help building your complete bike? Check out our bike build video below.

NOTE: To ensure that every component on your bicycle is working properly, Dans Comp recommends that all bikes be assembled by a qualified mechanic. Improper assembly of your bicycle may lead to premature wear or failure of individual components such as headsets, crank assembly and wheels. Failure to do so may void the manufacturer warranty.

Verified Owner
Monday, Mar 29 2021 (3 weeks ago)
Sunday 2021 Primer 18" BMX Bike (18.5" Toptube) (Black)
Really nice bike ... Sunday has a gr8 reputation and it doesn't slack off with the little ones .... gr8 job
Verified Owner
Saturday, Nov 28 2020 (5 months ago)
Sunday 2021 Primer 18" BMX Bike (18.5" Toptube) (Black)
Unfortunately the bike had fairly big paint blemish directly visible on Toptube. I purchased bike for my son's birthday(11-4) in August and it finally came October. I got the bike all together and finally took off the last piece of cardboard covering the toptube to reveal the blemish?. The quality control at Sunday should have noticed the blemish on the toptube. This bike should have been given a discount due to blemish. I really like the bike and rides nice other than that. My son's 10 I know he's going to scratch it up but it's not the point when you spend $400.