Subrosa Altus BMX Bike (20" Toptube) (Black)

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Subrosa Altus BMX Bike (20" Toptube) (Black)
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Price: $389.99 (Save 23%)
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Subrosa Altus BMX Bike Description:

The Subrosa Altus is a great first full-sized bike for young riders who are getting into freestyle. The 20" toptube allows riders to transition up to 20" wheels without riding a bike that is too big providing a more natural feel and better bike control. A high-tensile steel construction creates a durable foundation while the selection of quality Subrosa and Rant components ensures riding for years to come. Available in Black and Army Green color schemes, this 20" bike is recommended for kids 7 and up.


  • Frame: 100% 1020 High-Tensile Steel
  • Fork: 100% 1020 High-Tensile Steel, Tapered Legs (30mm Offset)
  • Headset: Standard Threadless (1-1/8")
  • Stem: Rant Alloy Top Load
  • Bars: 100% 1020 High-Tensile Steel 2-Piece (7.75")
  • Grips: Rant H.A.B.D. w/ Rant Nylon Bar Ends
  • Cranks: Chromoly 8 Spline 3-Piece (170mm)
  • Bottom Bracket: American, Unsealed
  • Pedals: Rant Trill Plastic
  • Sprocket: Subrosa Petal Sprocket (Steel) (25 Tooth)
  • Chain: Rant Max 410
  • Front Hub: Unsealed, Alloy Shell (3/8")
  • Rear Hub: Semi Sealed Cassette (14mm)
  • Driver: 9 Tooth
  • Front Rim: Rant Squad Alloy (36 Hole) (Single Wall)
  • Rear Rim: Rant Squad Alloy (36 Hole) (Single Wall)
  • Front Tire: Rant Squad (20 x 2.35")
  • Rear Tire: Rant Squad (20 x 2.35")
  • Seat: Subrosa Mid 1-Piece (Combo)
  • Seat Post: 1-Piece Alloy (Combo) (200mm Length)
  • Seat Clamp: Rant Alloy
  • Brake Lever: Alloy 2 Finger
  • Brakes: U-Brakes
  • Gyro: -
  • Gyro Tabs: -
  • Brake Mounts: Welded
  • Extras: -
  • Color: Black
  • Weight: 26.2 lbs


  • Toptube Length: 20"
  • Chainstay Length: 13.2"
  • Headtube Angle: 75°
  • Seattube Angle: 71°
  • Bottom Bracket Height: 11.6"
  • Standover: 8.0"
  • Recommended Sizing Guide: 5' to 5'4"

For assistance building your new bike, please check out our tech help section here for instructions and tips on how to build your bike to ensure it is safe.

Dan's Comp recommends riding with a helmet to protect that brain. Shop our selection of freestyle helmets here.

Need help finding the right bike for you? Not sure what size would suit you best? Check out our BMX buyers guide video below!

Note: To ensure that every component on your bicycle is working properly, Dan's 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.

This product was added to our catalog on June 28, 2022

Verified Owner
Tuesday, Jun 13 2023 (4 months ago)
Subrosa Altus BMX Bike (20" Toptube) (Black)
Recently bought this bike and some extra accessories for my 13 year old grandson who is celebrating almost 11 years cancer free.
He absolutely loves the bike and we are very satisfied with all the correspondence and expertise we received from the employees.
I highly recommend Dan's Comp for bike needs and will be sure to recommend them to friends and family.
Verified Owner
Saturday, Oct 29 2022 (11 months ago)
Subrosa Altus BMX Bike (20" Toptube) (Black)
Good bike for the price just wish it had a mid bb but overall a nice bike.

BMX Freestyle Sizing Guide

Wheel SizeToptube LengthRecommended Rider Height (Approximate)
12"12" - 13"2'4" to 3'
14"14" - 14.5"2'8" to 3'6"
16"16" - 16.5"3'2" to 4'
18"18" - 18.5"3'10" to 4'8"
20"18.5" - 20"4'8" to 5'2"
20"20"5' to 5'4"
20"20.25"5'2" to 5'6"
20"20.5"5'4" to 5'8"
20"20.75"5'6" to 6'
20"21"5'8" to 6'2"
20"21.25"6' +