| Selected Bikes |  BMC Blast 20
Brand: Model: |
 Brompton P Line Urban - Midnight Black Metallic - Mid
Brand: Model: |
Brand: Model: |
Brand: Model: |
| Gear Shift Pattern | Gear : 1 x 8 | -- | ||
| Drivetrain | -- | Brompton 4 speed drivetrain, 163% range | ||
| Frame | Blast 20" Lightweight Aluminium with Powder Coat Finish 1 1/8"" Head Tube BSA Threaded Bottom Bracket 140 mm Post Mount 9 X 135 mm QR |
Main Frame: Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints Rear Frame: Superlight Advance rear frame made from Titanium with a replaceable hanger, redesigned suspension block and new 54mm roller wheels |
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| Stem | BMC BLAST, 40 mm length, ± 6 angle | -- | ||
| Handle Bar | SDG Slater Handlebar, 650 mm wide, 20 mm rise, 19 mm bar ends, 31.8 mm clamp. | -- | ||
| Fork | Blast 20" Lightweight Aluminium with Powder Coat Finish 140 mm Post Mount 9 X 100 mm QR |
Superlight Titanium fork with a threaded headset | ||
| Seatpost | Alloy 27.2 mm, 300 mm long | Brompton Standard Chromoly steel tube – gloss black. Suitable for maximum inside leg 33″/83cm | ||
| Grip | -- | Superlight lock-on grips with precision ground lightweight foam adhered to ultrathin engineered core weighing just 42g per pair | ||
| Pedals | -- | Brompton Folding left hand and non-folding right-hand pedals | ||
| Chain | SRAM 8spd | Hollow pin Superlight Advance Chain | ||
| Shifters | SRAM X4 8Spd Trigger | Brompton 4 speed trigger shifter | ||
| Gear | -- | 4-speed gear system | ||
| Saddle | SDG Fly Jr | Fizik Aliante R7 – a comfortable saddle with lightweight performance from its Composite Carbon Nylon shell | ||
| Headset | -- | Brompton Superlight headset | ||
| Derailleur Rear | SRAM X4, Medium Cage | Patent-pending direct mount 4 speed derailleur | ||
| Hub Front | CNC Machined Alloy Hub Body, Sealed Bearings, Quick Release | -- | ||
| Hub Rear | CNC Machined Alloy Hub Body, Sealed Bearings, Quick Release | -- | ||
| Cassette | Sunrace 11-34T, Black finish | -- | ||
| Chainrings | Chainwheel : Lightweight Forged Alloy Cranks, 32T 1x Specific Narrow Wide chainring, 127 mm | 6061 forged aluminium crank with 50T chainring and integrated chainguard | ||
| Sprocket | -- | 11-13-15-18 Tooth | ||
| Bottom Bracket | -- | Square taper bottom bracket |
| Front | Kenda Booster 20 x 2.4" | Schwalbe ONE Black Tyre | ||
| Rear | Kenda Booster 20 x 2.4" | Schwalbe ONE Black Tyre | ||
| Wheel / RIM | Alex MD25, 25 mm inner width | Front Wheel: Superlight front wheel – Lightweight rim, double-butted spokes and aluminium hub body with sealed bearings and hex key axle Rear Wheel: Superlight 4 speed rear wheel – Lightweight rim, double-butted spokes and aluminium hub body with sealed bearings, newly developed 4 speed freehub body and hex key axle |
| Front | Tektro HD-M286, short reach levers, 140 mm rotors | Dual Pivot Calipers | ||
| Rear | Tektro HD-M286, short reach levers, 140 mm rotors | Dual Pivot Calipers |
| Front | -- | -- | ||
| Rear | -- | -- |
| Colors | -- | Midnight Black Metallic |
| Length | -- | -- | ||
| Weight | 9.2 kg | 10.2 kg |
| Features | - Lightweight Frame - Tailored Ergonomics - Dedicated Geometry - Powder Coating Finish - Control and Safety - Blast Sticker Kits |
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| Additional Details | Tubing : Al-13 Double Butted, Smoothwelded Aluminum Tire Clearance : 58 mm (measured width) ASTM Classification : Level 3 |
Folded Size: 645mm (H) x 585mm (W) x 270mm (D) (25.3” x 23” x 10.6”) Chain tensioner: Advance chain tensioner with replaceable hanger mounting Front carrier: Front carrier block adaptor for all types of Brompton luggage (non-electric) Mudguards: New curved profile with updated mudguard flaps |
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