Page 35 - Big Twin

Rocker Box for Evo

43-9162
BIG TWIN

43-9128 43-9170
43-9169
Chrome Rocker Box Individual Parts for Evolution Big Twin.
VT No. Item Fits
43-9127 43-9127 D-Ring 1984-91
43-9169 D-Ring 1992-99
43-9146 Lower 1984-91
43-9128 Top 1984-91
43-9146 43-9162 Top 1984-91
43-9170 Top 1992-99
43-9178

CUBIC INCH CHART
STROKE 3¹⁄₂” 3¹³⁄₁₆ 3.968” 4¹⁄₄” 4¹⁄₂” 4⁵⁄₈” 4³⁄₄” 5.00”
74” 80”
2³⁄₄” 45”
B 3⁵⁄₁₆” 61”
O 3⁷⁄₁₆” 64.8” 73.7” 78.7” 83.4” 85.7” 88.0” 92.8”
3¹⁄₂”
81.6”
86.6”
89.0”
76.3”
96.1”
91.4”
67.2”
R 3⁵⁄₈” 72.1” 81.7” 87.4” 92.9” 95.5” 99.0” 103.2”
3¹¹⁄₁₆”
90.7”
101.5”
98.8”
74.6”
96.1”
106.8”
84.7”
E 3¹³⁄₁₆” 79.9” 90.6” 97.0” 102.8” 103.7” 108.9” 114.2”
3⁷⁄₈” 82.3” 93.4” 100.1” 100” 108.9” 111.9” 117.8”
4.00” 87.9” 99.7” 106.8” 113.0” 116.1” 119.3” 125.6”
4¹⁄₈” 93.4” 106.0” 113.5” 120.2” 123.5” 126.9” 133.6”
4¹⁄₄” 99.2” 112.6” 120.5” 127.6” 131.1” 134.7” 141.8”
1 cubic inch = 16.38 cc 43-0377
1 cubic inch = .0163871 liter Chrome Top Cover and D-Ring Set fits 1984-91. Order
2
Cubic Inch = πr x Stroke gaskets separately.
Year
r = ¹⁄₂ of Bore Chrome 1984-91
43-9178
43-0377
Screw Set 1992-99
Chrome Rocker Box Screw Set fits Evo Big Twin Lower Rocker Box
1985-99 Big Twin. Mounting Hardware Set incudes
VT No. Type all correct bolts, allen screws and
8868-16 Acorn washers necessary for bolting
9788-24 Button Head Allen lower rocker cover to cylinder head.
Complete set for two heads.
VT No. U/M
Rocker Box Screw Kit for Evo includes 11-0621 Set
chrome allen screws and washers, and 2078-18 Each
copper sealing washers. “Tru-Seal” Evo Rocker Box Chrome
VT No. OEM Item Cover Collar and Screw Kit includes
8931-16 8931-16 Allen Screw Kit sealing washers with built in O-Ring for
15-0663* 63858-49 Fibre Washer, 50 pack position seal.
15-0221 6114 Copper Washer VT No. 37-0820
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