The CST Big Boat is the fat e-bike tyre with an aramid puncture layer: a smooth, fast-rolling tread for pavement and paths, a tan-wall look, and an e-bike rating to 50 km/h with a 115 kg load rating.

Highlights

  • Aramid puncture layer — built for the weight and torque of fat e-bikes
  • Smooth fast-rolling tread — quiet on bitumen, versatile on paths
  • E-bike rated to 50 km/h, 115 kg load per tyre
  • Tan wall finish, 60 TPI wire-bead casing

Made for fat e-bikes

CST built the Big Boat for the rigorous demands of e-bikes: puncture resistance and peace of mind, with a tread that rolls fast on pavement and handles mixed terrain.

Fit and compatibility

20-inch (ISO 406) fat-bike rims; run with an inner tube. Fits 20 × 4.0 fat e-bikes (check your frame clearance and rim width).

Need it fitted? Tune Cycles can fit and true it in the workshop, or ship it to your door.

CST backs its tyres and tubes against defects in materials and workmanship, assessed while serviceable original tread remains. Road hazards (cuts, snags, punctures), plug repairs, under- or over-inflation, overloading and incorrect mounting or rim fit aren't covered.

For warranty support, return the item to Tune Cycles with your proof of purchase and we'll manage the claim with the distributor for you. This cover is in addition to your rights under the Australian Consumer Law.

  • Big Boat tread pattern — fat e-bike
  • Size 20 × 4.0 (100-406)
  • 60 TPI casing, wire bead
  • Single compound tread
  • Aramid puncture layer, e-bike rated to 50 km/h
  • Load rating 115 kg per tyre
  • 941 g (CST catalogue weight)
BrandCST
ModelBig Boat (CTC06)
Size20 × 4.0
ETRTO100-406
Casing60 TPI
BeadWire
CompoundSingle
Max pressure30 psi
Load rating115 kg
Weight941 g
ProtectionAramid puncture layer, e-bike rated to 50 km/h
ColourBlack / tan wall
UseFat e-bike
SKU KWT-C2040TW-CTC06
Barcode # 6933882533141
Brand CST

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