Chris King Boost Center Lock Disc Rear Hub

Specifications:

Series:

Boost

Application:

All Mountain, Cross Country, Enduro

Brake Type:

Center Lock Disc

Wheel Standard:

Boost

Freehub Body Type:

72-tooth RingDrive

Technical Information:

Body Material:

aluminium (2024)

Bearings:

steel bearings

Features:

• lightweight, durable hub body
• bevelled hub flange for more stability
• smooth-running Chris King precision bearings
• iconic Chris King Angry Bee freehub sound
• developed and manufactured in Portland, Oregon (USA)

Models:

Over Locknut Dimension:

12 x 148 mm thru-axle

Spoke Hole Count:

28 hole

Freehub:

Shimano MTB

Gearing:

8-/9-/10-/11-speed

Flange Distance (L/R):

36.3 mm / 24 mm

Partial Bolt Circle Diameter (L/R):

57.4 mm / 57.4 mm

Manufacturer Numbers:

ECB1BB1 (black), ECY1BB1 (gold), ECB2BB1 (matte jet), ECM2BB1 (matte mango), ECH2BB1 (matte slate), ECT2BB1 (matte turquoise), ECN1BB1 (navy), ECBYBB1 (two tone-black-gold)

Over Locknut Dimension:

12 x 148 mm thru-axle

Spoke Hole Count:

32 hole

Freehub:

Shimano MTB

Gearing:

8-/9-/10-/11-speed

Flange Distance (L/R):

36.3 mm / 24 mm

Partial Bolt Circle Diameter (L/R):

57.4 mm / 57.4 mm

Manufacturer Numbers:

ECB1CB1 (black), ECY1CB1 (gold), ECB2CB1 (matte jet), ECM2CB1 (matte mango), ECH2CB1 (matte slate), ECT2CB1 (matte turquoise), ECN1CB1 (navy), ECS1CB1 (silver), ECBYCB1 (two tone-black-gold)

Over Locknut Dimension:

12 x 148 mm thru-axle

Spoke Hole Count:

28 hole

Freehub:

Shimano Micro Spline

Gearing:

12-speed

Flange Distance (L/R):

36.3 mm / 24 mm

Partial Bolt Circle Diameter (L/R):

57.4 mm / 57.4 mm

Manufacturer Numbers:

ECB2BB2 (black), ECY2BB2 (gold), ECB2BB2 (matte jet), ECM2BB2 (matte mango), ECH2BB2 (matte slate), ECT2BB2 (matte turquoise), ECN2BB2 (navy), ECS2BB2 (silver), ECBYBB2 (two tone-black-gold)

Over Locknut Dimension:

12 x 148 mm thru-axle

Spoke Hole Count:

32 hole

Freehub:

Shimano Micro Spline

Gearing:

12-speed

Flange Distance (L/R):

36.3 mm / 24 mm

Partial Bolt Circle Diameter (L/R):

57.4 mm / 57.4 mm

Manufacturer Numbers:

ECB2CB2 (black), ECY2CB2 (gold), ECB2CB2 (matte jet), ECM2CB2 (matte mango), ECH2CB2 (matte slate), ECT2CB2 (matte turquoise), ECN2CB2 (navy), ECS2CB2 (silver), ECBYCB2 (two tone-black-gold)

Over Locknut Dimension:

12 x 148 mm thru-axle

Spoke Hole Count:

28 hole

Freehub:

SRAM XD

Gearing:

11-/12-speed

Flange Distance (L/R):

36.3 mm / 24 mm

Partial Bolt Circle Diameter (L/R):

57.4 mm / 57.4 mm

Manufacturer Numbers:

ECB1BB3 (black), ECY1BB3 (gold), ECB1BB3 (matte jet), ECM1BB3 (matte mango), ECH1BB3 (matte slate), ECT1BB3 (matte turquoise), ECN1BB3 (navy), ECS1BB3 (silver), ECBYBB3 (two tone-black-gold)

Over Locknut Dimension:

12 x 148 mm thru-axle

Spoke Hole Count:

32 hole

Freehub:

SRAM XD

Gearing:

11-/12-speed

Flange Distance (L/R):

36.3 mm / 24 mm

Partial Bolt Circle Diameter (L/R):

57.4 mm / 57.4 mm

Manufacturer Numbers:

ECB1CB3 (black), ECY1CB3 (gold), ECB1CB3 (matte jet), ECM1CB3 (matte mango), ECH1CB3 (matte slate), ECT1CB3 (matte turquoise), ECN1CB3 (navy), ECS1CB3 (silver), ECBYCB3 (two tone-black-gold)

Contents:

• 1 x Chris King Boost Center Lock Disc rear hub