Mountain Bike

FRAME AND FEATURES

Polygon uses a 6061 ALX hydroformed and triple-butted aluminum frame on the Collosus lineup. Internal cable routing is secured at the ports to help prevent rattle, keeping this alloy steed looking clean. The derailleur cable leaves the front triangle, entering the driveside chainstay before exiting just before the rear axle. On the non-driveside, the brake hose is left exposed but secured and tucked nicely behind the chainstay, maintaining the clean aesthetic Polygon was going for.

The N7 also has downtube frame protection features, with a shuttle pad near the headtube and a bash guard near the bottom bracket. The chainstay has a guard to protect the tubing and keep chain rattle on the quieter side. Frames come in four sizes, from small to X-large, and the color is velvet cake red.

SUSPENSION

For the Collosus, Polygon switched things up from the suspension platform found on their Siskiu bikes. Independent Floating Suspension (IFS) is Polygon’s six-bar suspension design, found on these big rigs. Predictability is the goal for IFS as the N7 goes through all 170mm of its travel while also focusing on pedal and braking forces, pedaling efficiency, and wheel path control.

GEOMETRY

A slack 63.5° headtube is paired with a reasonably upright 77° seat tube to keep the rider in a comfortable pedaling position. The N7 has a BB height of 353mm, with a drop of 27mm, and chainstays are consistent across all sizes at a compact 435mm for its 29” wheel.

Reach increases a steady 20mm across frame sizes, starting at 440mm on a size small and topping off at an even 500mm on an X-large. Our size large on test has a reach of 480mm. The wheelbase on a large is 1266mm. Frame Stack jumps up from 621.9mm on a small to 639.8mm on the X-large, with our size large’s stack measuring 634.1mm.

Build Specs

When you think of the perfect mountain bike, what comes to mind? For us, it's the Spark 910. Why, you ask? Well, beyond the fact that it is fast, lightweight and ultra capable on all sorts of terrain, it's just damned good lookin'. Short-travel trail bike? "Downcountry" rig? Occasional race bike? Whatever, call it what you want to call it. All we know is that this is one hell of a mountain bike.

Key Features
Spark Carbon HMF Frame
FOX 34 Float P. Elite 130mm Fork
FOX Nude 5T EVOL, TwinLoc, 120mm
Shimano XT 12 Speed
Shimano XT 4 Piston Disc Brakes
Schwalbe Wicked Will Tires

Specification

• Frameset

  Frameset

  ALX XC TRAIL

  Fork

  SR SUNTOUR XCR32 AIR LOR 120mm (27.5" & 29") TRAVEL

  Frame Color

  TURQOISE SURF - WHITE

  Decal Color

  PURPLE

• Drivetrain

  Shifter

  SHIMANO DEORE SL-M6100-R, 1x12-SPEED TRIGGER

  Crank

  SHIMANO MT-510-1 BOOST 32T, 170mm (S, M) / 175mm (L, XL)

  Cassette

  12 SPEED 11-51T

  Rear Derailleur

  SHIMANO DEORE RD-M6100-SGS DIRECT ATTACH

  BB

  SHIMANO 2-PIECE CRANKSET BSA THREADED 73mm

  Chain

  KMC X-12

  Pedal

  PP FLAT PEDAL W/ REFLECTOR

• Cockpit

  Saddle

  ENTITY VOID, STEEL ø 7mm

  Seatpost

  ENTITY XPERT ALLOY, DXL: 27.2 x 350mm, SEAT CLAMP: 31.8mm W/ QR

  Handlebar

  ENTITY XPERT ALLOY, W: 760mm, BAR BORE: 31.8mm, RISE/DROP: 12mm, BEND: 6degree

  Handlestem

  ENTITY XPERT ALLOY, EXT: 40mm, BAR BORE: 31.8mm, RISE/DROP: 7degree

  Headset

  ZERO STACK (ZS) SEALED BEARING FOR TAPER HEAD TUBE, ZS 44/28.6 | ZS 56/40

• Wheel & Tire

  Wheel Set

  ENTITY XL2 DISC

  Wheel Size

  27.5" / 29"

  Tire

  WTB TRAIL BOSS COMP 27.5"x2.25" / 29"x2.25"

  Rim

  584 / 622-30 32H FOR TYRE 584 / 622-54/76 TUBELESS READY

• Brake

  Brake Lever

  SHIMANO BL-MT201

  Brake Caliper

  SHIMANO MT-201 HYDRAULIC DISC BRAKES

  Rotor

  SHIMANO SM-RT10 160mm CENTER-LOCK

SPECIFICATION

• BRAND

  BMC

• SKU LIST

  30001088 30001089 30001090 30001091

• SPEC

  NX Eagle mix

• FRAME

  Twostroke AL Premium Aluminium, Hydroformed, Smoothwelded
  • Internal Cable Routing
  • BSA Threaded Bottom Bracket
  • Post Mount Disc

• FORK

  Rockshox Judy Silver

• GEARS

  1x12

• CHAINWHEEL

  SRAM NX Eagle 32T

• CASSETTE

  SRAM SX Eagle 11-50T

• CHAIN

  SRAM SX Eagle

• REAR DERAILLEUR

  SRAM NX Eagle

• SHIFTERS

  SRAM NX Eagle

• BRAKES

  SRAM Level T / SRAM Centerline Rotors (160/160 S-M, 180/160 L-XL)

• HANDLEBAR

  BMC MFB03 Alloy 750mm

• STEM

  Forged 6061 Alloy

• SEATPOST

  BMC MSP03 - 31,6mm - 0mm Offset

• SADDLE

  Velo VL-1831

• HUBS

  SHIMANO MT400

• RIMS

  XCD23

• TIRES

  Vittoria Barzo 2.25

• TIRE CLEARANCE

  58mm (Measured Width)

• WEIGHT (KG)

  1.0

• WEIGHT LIMIT

  110kg

• ASTM CLASSIFICATION

  Level 3

• FRAMESET OPTION

  No

• CONFIGURABLE

  No

• DROPPER SEATPOST

  No