The BB4129 brings TOKEN's Ninja thread-together design to SRAM DUB cranks in BB86-family frames, for maximum stiffness, durability and silence.

Highlights

  • Thread-together Ninja design for BB86 / BB89.5 / BB92 (41 mm)
  • SRAM DUB 28.99 mm cranksets
  • Premium steel or TBT ceramic bearings
  • Fusion construction and X-Seal
  • Double thread for easier installation

Ninja thread-together design

The alloy shell extends through the frame so the left and right sides thread together, locking frame, crankset and bottom bracket into one unit. That adds stiffness and stops the movement that makes press-fit bottom brackets creak.

Fusion construction

Fusion construction wraps the alloy bearing housing in a nylon composite. The composite can be machined for a snug fit in the frame, while the bearings sit on a solid alloy platform for a longer life.

X-Seal protection

TOKEN's X-Seal technology keeps dirt and water out of the bearings with very little added friction, so the bottom bracket keeps spinning freely in bad conditions.

Double thread

TOKEN's double-thread design makes installation faster, with less axial force needed.

Bearing choice

TBT bearings use ceramic balls and very hard races for very low rolling resistance and long-lasting performance. Premium bearings are TOKEN's high carbon steel bearings.

Options

Bearing TypeBearingsWeightProduct code
PremiumHigh carbon steel92 gBB4129/2
CeramicTBT ceramic89 gBB4129/2-TBT

Compatibility & fit

Frame: BB86 / BB89.5 / BB92 (41 mm x 86.5 / 89.5 / 92). Crankset: SRAM DUB 28.99 mm spindle.

Installation: TOKEN recommends its BB841T-5RSP / BB841T-5SPA tool; it is also compatible with Park Tool BBT-69.2.

Listed weights exclude spacers.

Bottom bracket installation is a separate workshop service and isn't included in the price. Our workshop can fit it with the correct tooling and check the shell before it goes in.

TOKEN warrants this product against defects in materials or workmanship for two years from the original date of purchase, for the original purchaser with dated proof of purchase. Normal wear and tear, bearings (unless unused), and damage from incorrect installation, modification, neglect or improper maintenance are not covered; TOKEN repairs or replaces a defective product at its discretion. This is in addition to your rights under the Australian Consumer Law.

For warranty support, return the product to Tune Cycles and we'll manage the claim with TOKEN's Australian distributor.

  • Thread-together Ninja design for BB86 / BB89.5 / BB92 (41 mm)
  • SRAM DUB 28.99 mm cranksets
  • Premium steel or TBT ceramic bearings
  • Fusion construction and X-Seal
  • Double thread for easier installation
TypeThread together
Frame typeBB86 / BB89.5 / BB92 (41 mm x 86.5 / 89.5 / 92)
Crank typeSRAM DUB 28.99 mm spindle
Bearing typePremium (high carbon steel) or TBT (ceramic)
Weight (excl. spacers)TBT 89 g; Premium 92 g
TOKEN toolBB841T-5RSP / BB841T-5SPA
Compatible Park ToolBBT-69.2
SKU FES-P-30308
Brand TOKEN
Shipping Weight 0.1200kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m