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Grand Cru 50.4 BCD Crankset

 

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Classic 50.4 BCD cranks, like the TA, Stronglight 49D, and others, are still sought after by randonneurs and cyclo-tourists. These cranks offer tremendous versatility since chain rings from 28t to 62t fit. They are also light and have narrow Q-factors, or tread.

While the Grand Cru 50.4 Crankset looks like a classic, we have made several important improvements. They are cold forged from 7075 aluminum alloy. The rings are thicker so they don't flex as on classic cranks. The outer rings have modern shifting aids such as ramps and pins, so shifting performance is much improved. All stainless hardware with allen head nuts/bolts. Includes aluminum machined dust caps and BB bolts. Dust caps function as self extracting crank hardware. 

Specs:

  • Teeth: 46/30
  • BCD: 50.4mm
  • Q Factor: 144mm
  • Chainline: 43.5mm
  • Speeds: 5-11 compatible
  • Taper: JIS square taper
  • Suggested Bottom Bracket Spindle Length: 118mm
  • Pedal Threading: 9/16"
  • Weight: 654 gr (for 170 mm cranks with hardware)

 

Customer Reviews

Based on 9 reviews
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K
K.P.
Grand Cru Review

I love both of them and will order more when they are in stock. My only complaint is that I want 48 / 32 chainrings for some of them.

Thank you,

Kim.

C
C.J.
A most sensible gear range!

Great gear range, elegant finish and design.

T
T.
Worth it

I almost went with a cheaper option 46x30 FSA/GRX. You won’t regret the extra cost. Absolutely beautiful crank.

D
D.S.
works and looks great

I have this crankset on a Soma GR with 584/42 rubber, a 12-26 (27?) 9spd cassette, and Sun derailleurs. This is the best drivetrain of my experience, with flawless shifting and a great range of gearing (top is a realistic 101 gear-inches). I wouldn't know how to judge quality but this item is holding up very well in every way. My Raleigh Grand Prix (bought new 28 Dec 72) will get one when I restore it. I'd like one on my touring bike as well, but I haven't yet found a 10spd cassette that would work with it to give the gearing I want (20-100 gear inches, 584-47 tires).

J
J.P.
Don’t know. Looks pretty

Unfortunately I have not installed on my bike build. Cannot find a bottom bracket to put the crankset on. All on backorder everywhere I search

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