If any of you gentlemen are looking for a Suzuki 4ls drum I have one. But I want $600 for it. On drums for racing smaller capacity bikes the 2ls from the CB 72/77 or CB 450 is a good drum. I use one on my P5 500 yamaha. They are also P4 correct. Curly
Here is some good info/comparisons.
I can't see the CB400 listed.
http://www.eurospares.com/drumbrak.htmSuzuki drum brakes
Model OD x shoe width Swept area Radius x S.A.
(square inches) braking coefficient
GT550/750 4LS (200mm) 7.81" x 1.0" wide (x 2) 49.07 191.6
T500 (1967) (200mm) 8.00" x 1.6" 40.21 160.8
T350 (1970) (180mm) 7.12" x 1.12" 25.06 89.21
X-5 Invader (160mm) 6.25" x 1.09" 21.4 66.87
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Kawasaki drum brakes
H1R 4LS (250mm) 9.87" x .75" (x2) 46.53 229.74
H1 (1969) (200mm) 7.90" x 1.4" 34.74 137.22
A7SS (180mm) 7.00" x 1.2" 26.38 92.33
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Yamaha drum brakes
XS-650 (1969) (200mm) 7.80" x 1.3" 31.85 124.2
YDS-6 (1967) (180mm) 7.02" x 1.17" 25.8 90.3
TD3 (260mm) 10.29" x 1.06" (x2) 68.53 352.6
entire front wheel assy, inc. 19" alloy shoulderless rim (36 spoke), axle and
TT100 tyre and tube (and valve and cap!)is 18.5 kg.
Each brake backing plate assy: 2.25kg
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Honda drum brakes
CB350 (1970) (160mm) 6.30" x 1.4" 27.70 87.25
CB175 (1971) (160mm) 6.20" x 1.18" 22.98 71.24
CB77/1968 CB450 (200mm) 7.88" x 1.18" 29.21 115.08
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Bridgestone
350 GTR (190mm) 7.40" x 1.2" 27.89 103.20
175 (160mm) 6.20" x 1.18" 22.98 71.24
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Bultaco drum brakes
250 Metralla (160mm) 6.30" x 1.6" 31.65 99.69
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Ducati drum brakes
250 (180mm) 7.08" x
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Bianchi
500 GP (230mm 4LS) 9.5" x 1.25" (2) 74.61 354.41
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BSA
Gold Star (200mm SLS) 8.0" x 1.375" 34.60 138.42
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Moto Morini
350 Sport (Grimeca 230mm Dual-SLS)
9.05" x 1.16" (2) 65.96 298.47
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Munch
Mammut 2LS 10.0" x 2.0" 62.83 314.1