| SPORTSTER GEARS (4 SPEED) |
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The gears listed on this page will fit
Sportster 4 speed transmissions made from 1956 through 1990. All Andrews 4
speed Sportster gears are made from high nickel alloy steel which is heat
treated and shot peened for maximum durability. Shot peening greatly
improves the wear resistance of drive edges and slots. All Sportster
gearboxes run better with Andrews gears.
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(A) STOCK 1ST GEARS.
Part #251050 main 1st (27T) (replaces 35277-52A)
Part #251060 counter 1st (17T) (replaces 35760-73 late only,
1973-1985). To fit 1986 and later requires early countershaft #259010
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WIDE RATIO 1ST GEAR SETS (Not
pictured)
Changes 1st from 2.52 ratio to 2.68 for more low end torque with 21T or 22T
trans sprockets.
Part #251010 (late only, 1973-1985). To fit 1986 and later requires
early countershaft #259010
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(B) STOCK 2ND GEARS.
Part #252020 2nd main (23T) (replaces 35296-56 & 56A)
Part #252040 2nd counter (20T) (replaces 35750-58 & 58A)
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(C) STOCK 3RD GEARS.
Part #253050 3rd main (20T) (replaces 35305-56 & 56A)
Part #253030 3rd counter (23T) (replaces 35709-54A & 54B)
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(D) TRANSMISSION SHAFTS.
Replacement transmission shafts for standard H/D part numbers. Our shafts
are made of super alloy material for maximum strength and durability on this
most critical part.
Part #259010 countershaft (1956-mid-84)
(replaces H/D# 35613-58)
Part #258080 early mainshaft (1956-’69 kick start)
(replaces 35044-56) (Drilled through for clutch rod)
Part #258120 late mainshaft (1971-mid-84)
(replaces 35046-71) (Solid shaft; no through hole)
Part #258190 mainshaft (alternator) (mid-84-’90)
(replaces 35036-84A) (Solid shaft; no through hole)
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(E) EVOLUTION / ALTERNATOR “C” RATIO
GEAR SET
Part #254850 (mid 84-90) (26T and 18T)
This gear set fits all 1984-1990 alternator engines. All 1987-1990 4 speed
Sportsters have “C” ratio main drive gears as stock parts.
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(F) “C” RATIO MAIN DRIVE GEAR SETS
Part #254720 (1971-1978)
Part #254740 (1979-mid 84)
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STOCK RATIO MAIN DRIVE GEARS (17T
& 27T)
NOT PICTURED
Part #254710 Clutch gear (1971-1978) (replaces 37448-71)
Part #254730 Clutch gear (1979-mid 84) (replaces 37448-79)
Part #255580 Countershaft gear (27T) (replaces 35695-58)
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COMPLETE GEAR SETS (includes the
following parts):
Part #250100 (“W” 1st, stock 4th) (1973-1978)
Part #250200 (“W” 1st, “C” 4th) (1973-1978)
Part #250300 (stock 1st and 4th) (1973-1978)
Part #250400 (stock 1st, “C” 4th) (1973-1978) |
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Price sheet shows complete listing of
all combinations of gear kits with available ratios for generator engines
(1979-1984) and alternator engines (1984-1990).
Sportster gear ratios are listed below for comparison. |
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Stock |
"W" |
"W" |
"C" |
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ratios |
ratios(1) |
ratios(2) |
ratios |
| 1st |
2.52 |
2.68 |
2.44 |
2.29 |
| 2nd |
1.83 |
1.83 |
1.66 |
1.66 |
| 3rd |
1.38 |
1.38 |
1.26 |
1.26 |
| 4th |
1.00 |
1.00 |
1.00 |
1.00 |
(1) "W" ratio 1st plus stock main
drive (27/17 teeth)
(2) "W" ratio 1st plus "C" ratio main drive (26/18 teeth) |
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