Product Description
From their Expert level range of the bikes, the Stay Strong Optimum PRK BMX Bike is spec'd out as a skatepark ride but it's ultimately at home on any terrain.
It boasts popular frame geometry and parts which include tapered forks with chromoly steer tube, double wall rims, chromoly 3-piece cranks and fully sealed bearing throughout so the PRK really doesn't disappoint.
Removable tabs on the frame make fitting a gyro a breeze, 25/9t gearing gives greater clearance at the skatepark and lightweight parts like the nylon pedals & combo seat/post make this bike easier to manoeuvre and nail those tricks!
Product Specs
- FRAME MATERIALChromoly Top tube & Down tube
- WHEEL SIZE20"
- TOP TUBE LENGTH20.75"
- CHAIN STAY LENGTH13.75"
- HEADTUBE ANGLE75°
- SEAT TUBE ANGLE71°
- FORKSChromoly Steerer Tube and Tapered Hi-Ten Legs
- BARS2-piece steel (9 x 29)
- STEMAlloy Top Load
- HEADSETIntegrated
- BRAKE MOUNTSWelded U-Brake
- BRAKESU-Brake
- FRONT HUBSealed
- FRONT RIMDouble Wall
- REAR HUB14mm Sealed Cassette
- REAR RIMDouble Wall
- tireS
- SPROCKET25t
- CRANKS3-piece chromoly 170mm tubular with pinch bolt
- BB19mm Mid
- PEDALSNylon/Fiberglass
- SEATCombo Seat/Post
- GEARING25/9
- WEIGHT24.91lbs
Product Highlights
- Full Size Bike with a Shorter Top Tube and geometry to Suit riders who are 4ft - 5ft 4" / 120cm -160cm
- A great all rounder suitable for any type of riding
- A Great All Rounder, Suitable for Any Type of Riding
- Includes Sealed Bearings
- U-brake system on welded mounts
NEED SOME HELP CHOOSING A BMX BIKE?
We have compiled a complete BMX buyers guide to help you through the process! Keep reading to find out more about your perfect BMX bike. Here at SourceBMX we are all riders, so we can offer advice that only 100% rider-owned BMX shops can - just ask.
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BMX BIKE SIZE GUIDE
BMX bikes are measured in two ways: the size of the wheel (20” is the standard BMX wheel size), and the length of the frame which is gauged by the top tube measurement. We have also simplified for you into XS, Small, Medium, etc.Here is a guide to what size you should be looking for - note that there is some overlap in sizes, as personal preference also comes into the equation!
| Rider Height (in) | Rider Height (cm ) | Wheel Size (in) | Top Tube Length (in) |
|---|---|---|---|
| 2FT - 3FT | 60 - 90cm | 12" | 11.5" - 13" |
| 2'8" - 3'4" | 80 - 100 cm | 14" | 2.8" - 15" |
| 3FT - 3'8" | 90 - 110cm | 16" | 14.5" - 17" |
| 3'6" - 4'6" | 105 - 135cm | 18" | 17" - 18.5" |
| 4'6" - 5'1" (XS) |
135 - 155cm | 20" | 18" - 20" |
| 4'10" - 5'4" | 147 - 162cm | 20" | 20" - 20.25" (XS - S) |
| 5'2"- 5'8" | 157 - 173cm | 20" | 20" - 20.5" (S - M) |
| 5'6" - 6FT | 165 - 185cm | 20" | 20.25" - 21" (M - L) |
| 6FT + | 180cm + | 20" | 20.75" + (L - XL) |


