Mongoose Legion L40 20" BMX
Mongoose Legion L40 20" BMX - Black is backordered and will ship as soon as it is back in stock.
Pickup available at HALLAM
Usually ready in 24 hours
Shipping Information
Shipping Information
Certain bike brands cannot be shipped and are only available for Click and Collect.
These include but are not limited to the following brands: Giant, GT, Liv, Momentum and Mongoose.
For all other brands, we can provide a shipping quote to your postcode. Please contact us by email at staff@ivanhoecycles.com.au, or text us on 0417 122 950.
Mongoose Legion L40 20" BMX
Mongoose Legion L40
Mongoose’s Legion L40 is the sweet-spot BMX in the range. It’s extremely good value for riders - especially for teens and pre-teens - who are often searching for their first proper BMX.
Mongoose has used a high-tensile (or Hi-Ten) steel for the main frame and fork. A high-tensile steel is used for the Legion L40 because it’s part of a group of performance steels. This means better corrosion resistance, lighter and can handle way more stress.
The Legion L40 frame has a 20.5-inch top tube.
It’s worth noting that all Legion BMX’s (except for the L16 and L18) have 20-inch wheels. It’s the OG wheel size; present since Day 0.
The models differ in the components - and the top tube length.
And the top tube length is (one of) the things that matter. It’s how long or short a BMX is. 20.5-inches is a good “average” size. As a rough estimate, we’d recommend the 20.5” top tube for riders between 152cm to 168cm.
Yes, BMX’s are simple (especially compared to a mountain bike) but parts for key areas still needs to be thought about.
One area is the bottom bracket.
It’s under tremendous load - always. It’s where you apply pressure to the pedal and where you apply power.
The Legion L40’s mid-sealed bottom bracket features sealed bearings. These are going to be resistant to the elements and therefore last longer, especially compared to the bottom brackets on the Legion L10 and Legion L20.
Rims tend to be the other area.
The L40 build uses a 36-hole wheel for extra strength. Plus the rim’s 24mm width paired to 2.30-inch wide tyres means it can handle impacts and has less chance of pinch flatting. The wide rim also adds extra strength.
Upgrade from Legion L20
- 0.25-inch longer in the top tube (20.5” top tube).
- Better Mid-sealed bottom bracket (details below).
Key Features
- 20.5” top tube length. Suggested rider height is 152cm-168cm.
- Hi-Ten steel frame and mid BB shell.
- Drivetrain features 175 mm 3-piece tubular chromoly hollow spindle cranks with a 25T steel chainring and mid sealed bearing bottom bracket.
- 20” x 2.3” tyres mounted on aluminium single wall 36H rims with 3/8” in axle front hub and 9T cog sealed bearing cassette rear hub.
- Hi-Ten steel handlebar and fork, 50 mm stem, standard 1-1/8” headset, and aluminium U-brake and brake levers.
SPECIFICATIONS
| Size | 20.50-inch Top Tube |
| Frame | Hi-Ten steel, BMX freestyle geometry, mid BB shell |
| Fork | Hi-Ten steel steerer and fork |
| Crank | 3-piece, tubular chromoly, 25T steel chainring |
| Chain | KMC S1 |
| Bottom Bracket | Mid sealed bearing, 8-spline spindle |
| Cassette | Single-speed, 9T cassette driver |
| Rims | Aluminium single wall, 24mm ID, 36H |
| Hubs | [F] Steel, ball bearing, 3/8" axle, 36H [R] Steel, sealed-bearing cassette, 14mm axle, 36H |
| Spokes | 14G, steel, black |
| Tyres | 20"x2.30", wire bead |
| Pedals | Mongoose, nylons |
| Brakes | U-brake, aluminium |
| Handlebar | Hi-Ten steel, 28" width, 8" rise |
| Stem | Mongoose, threadless top load, 50mm |
| Headset | Threadless, integrated 1-1/8”, cartridge bearing |
| Seat Post | Steel, 250mm, 25.4mm |
| Saddle | Mongoose Unifier |
| Grips | Mongoose Mush XL, 160mm |
