I found a Sportster engine for sale. What are the first things I should check or replace?

When starting with a used engine of unknown history, it's wise to at least perform a top-end refresh. This typically includes new gaskets, checking cylinder and piston tolerances, and inspecting the valve train. This gives you peace of mind and a reliable starting point.

What are the easiest ways to get more power from my stock Sportster engine?

The most common and effective "Stage 1" upgrades are improving airflow. This means installing a high-flow air cleaner and a less restrictive exhaust system. These two changes allow the engine to breathe more freely and will deliver a noticeable performance gain without ever opening up the motor itself.

I'm rebuilding my engine. How important is it to replace all the hardware?

While not always strictly necessary, it's highly recommended. Engine hardware is subject to countless heat cycles and stress, which can cause it to stretch and weaken over time. Using new, high-quality head bolts, case bolts, and other hardware ensures proper torque specs and a leak-free, reliable engine for years to come.

Engine Mounts Motorcycle Engine

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British Standard Engine and Transmission Lock Tab Set - 1963 - 1972 Triumph 650 with 4 Speed Gearbox
14 reviews $22.95

Colony #7604-7 Upper Motor Mount Kit Acorns Nut 1936-1984 Harley-Davidson OHV Big Twins - Chrome Plated
4 reviews $21.52

Colony #9937-20 Front Motor Mount Allen Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
1 review $18.34

Colony #9773-8 Center Motor Mount Kit Acorn Nut 1986-2003 Harley-Davidson Sportster - Chrome Plated
$16.73

Colony #9771-8-P Center Motor Mount Kit Smooth Allen Kit 1991 & 1993-2003 Harley-Davidson Sportster - Chrome Plated
2 reviews $13.02

Colony #2468-8-P Transmission to Motor Mount Smooth Allen Bolt Kit 2007-Up Harley-Davidson Softail/Dyna/FLT - Chrome Plated
$11.14

Colony #3691-15 Plain Head Lower Motor Mount Kit 1937-1947 Harley-Davidson Side Valve Big Twins - Parkerized
$39.88

Colony #3689-15 Lower Motor Mount Kit 1937-1947 Harley-Davidson Side Valve Big Twins - CAD Plated
$39.88

Colony #3688-15 Lower Motor Mount Kit 1937-1947 Harley-Davidson Side Valve Big Twins - Chrome Plated
$43.45

Colony #3686-12 Lower Motor Mount Kit 1966-1969 Harley-Davidson OHV Big Twins - CAD Plated
$33.00

Colony #3125-14-P Motor Mounting Kit 2017-Up Harley-Davidson Touring Models - Chrome Plated
$23.10

Colony #8870-21 Lower Motor Mount Kit Acorn Head 1986-1992 Harley-Davidson Sportster - Chrome Plated
$33.67

Colony #9936-28 Front Motor Mount Kit Acorn 1991-Up Harley-Davidson Dyna - Chrome Plated
$36.20

Colony #2118-15 Lower Front Hex Head Motor Mount Kit 2000-Up Harley-Davidson Softail - Zinc Plated
$44.67

Colony #9780-5 Top Motor Mount Hardware Kit 1932-Up Harley-Davidson 45's - CAD Plated
$10.37

Colony #2485-22 Motor Mounting Kit Upper and Lower Hex 2007-Up Harley-Davidson - Chrome Plated
$50.60

Colony #2403-22 Motor Mounting Kit Upper and Lower Allen 2007-Up Harley-Davidson - Chrome Plated
$50.60

Colony #2403-22-P Upper and Lower Motor Mounting Kit Smooth Allen 2007-2008 Harley-Davidson FLT - Chrome Plated
$56.93

Colony #2854-6 Upper Engine Allen Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
$13.92

Colony #2709-24 Motor Mounting Kit Upper and Lower Allen 2009-Up Harley-Davidson FLT - Chrome Plated
$31.90

Colony #2649-9 Top Motor Mount Hardware Kit 1936-1947 Harley-Davidson Big Twin - Parkerized
$15.13

Colony #2648-9 Top Motor Mount Hardware Kit 1936-1947 Harley-Davidson Big Twin - CAD Plated
$15.13

Colony #2578-4 Top Motor Mount Hardware Kit 1948-1951 Harley-Davidson Big Twins - Parkerized
$11.20

Colony #3035-5 Top Motor Mount Hardware 1932-Up Harley-Davidson 45s - Parkerized
$10.37

Colony #9927-28-P Upper and Lower Motor Mount Kit Smooth Allen 1984-1999 Harley-Davidson Softail - Chrome Plated
$53.58

Colony #2709-24-P Upper and Lower Motor Mount Kit Smooth Allen 2009-Up Harley-Davidson FLT - Chrome Plated
$36.30

Colony #9935-8-P Transmission to Motor Mount Kit Smooth Allen 1999-2006 Harley-Davidson Twin Cam - Chrome Plated
$14.34

Colony #2994-8-P Center Motor Mount Kit Smooth Allen 1992 Harley-Davidson Sportster - Chrome Plated
$13.02

Colony #2993-8-P Center Motor Mount Kit Smooth Allen 1986-1990 Harley-Davidson Sportster - Chrome Plated
$13.02

Colony #2468-8-P Transmission to Motor Mount Smooth Allen Kit 2007-Up Harley-Davidson Softail/Dyna/FLT - Chrome Plated
$14.34

Colony #2229-16 Motor Mount Kit Acorn 2004-Up Harley-Davidson Sportster - Chrome Plated
$55.28

Colony #3441-13 Motor Mounting Kit 2017-Up Harley-Davidson Touring Models - Chrome Plated
$24.88

Colony #3440-12 Motor Case Mounting Kit 2017-Up Harley-Davidson Touring Models - Chrome Plated
$45.01

Cycle Standard Engine Stabilizer Link - Chrome - 1995-2017 Harley-Davidson Dyna
$95.08

Cycle Standard Complete Rear Rubber Motor Mount Kit 2014-Up Harley-Davidson Sportsters
$156.38

Colony #3058-10 Rear Motor Mount & Sprocket Cover Mounting Kit 1983-1985 Harley-Davidson XL - Zinc Plated
$27.50

Colony #3687-15 Lower Motor Mount Kit 1937-1947 Harley-Davidson Side Valve Big Twins - Parkerized
$39.88

Colony #3682-16 Lower Motor Mount Kit 1958-1965 Harley-Davidson OHV Big Twins - Chrome Plated
$33.55

Colony #3681-16 Lower Motor Mount Kit 1958-1965 Harley-Davidson OHV Big Twins - Parkerized
$30.80

Colony #3680-16 Lower Motor Mount Kit 1936-1957 Harley-Davidson OHV Big Twins - CAD Plated
$40.70

Colony #3125-14 Motor Mounting Kit 2017-Up Harley-Davidson Touring Models - Chrome Plated
$20.57

Gasbox Top Motor Mount 2007-Up Harley Sportster Models - with EFI Ignition Coil Relocation
5 reviews $39.95

Colony #3036-22 Upper and Lower Motor Mount Kit 1937-1947 Harley-Davidson Big Twin Side Valve - Parkerized
1 review $43.82

Colony #2117-15 Motor Mount Kit Smooth Hex Bolts 2000-Up Harley-Davidson Softail - Chrome Plated
$58.20

Colony #9723-22 Upper and Lower Motor Mount Kit 1937-1947 Harley-Davidson Big Twin Side Valve - Parkerized
$43.82

Colony #2650-13 Top Motor Mount Hardware 1957-E1972 Harley-Davidson XL 1952-1972 Big Twin - Parkerized
1 review $21.78

Colony #2994-8 Allen Center Motor Mount Kit 1992 Harley-Davidson Sportster - Chrome Plated
$11.90

Colony #2993-8 Allen Center Motor Mount Kit 1986-1990 Harley-Davidson Sportster - Chrome Plated
$11.90

Colony #3034-16 Lower Motor Mount Kit Harley-Davidson All 45's 1930-1936 VL - Parkerized
1 review $32.95

Colony #9937-20-P Front Motor Mount Kit Smooth Chrome Allen Harley Dyna 91-up — Colony #9937-20-P Front Motor Mount Smooth Allen Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
1 review $20.27

Colony #9797-20-P Front Motor Mount Smooth Allen Kit 1957-1985 Harley-Davidson Ironhead Sportster - Chrome Plated
2 reviews $60.83

Colony #2668-21 Lower Motor Mount Acorn Kit 1993-2003 Harley Sportster - Chrome Plated
1 review $33.67

Colony #2852-6 Upper Engine Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
1 review $14.52

Colony #2853-6 Upper Engine Mounting Kit 1984-1999 Harley-Davidson Softail - Zinc Plated
1 review $12.71

Colony #2228-16 Motor Mount Button Allen Kit 2000-Up Harley-Davidson Sportster - Chrome Plated
$33.84

Colony #9926-17 Upper & Lower Motor Mounting Allen Kit 1970-1984 Harley-Davidson Big Twin - Chrome Plated
$39.11

Colony #9928-20 Motor Mounting Allen Kit 1988-2006 Harley-Davidson FLT/FLHT/FXR/FXRS - Chrome Plated
1 review $44.89

Colony #2116-15 Lower Front Hex Head Motor Mount Kit 2000-Up Harley-Davidson Softail - Chrome Plated
1 review $58.20

Colony #9967-4 Top Motor Mount to Cylinder Head Hardware 1993-Up Harley-Davidson Big Twin 1986-Up XL - Zinc Plated
$12.74

Colony #9859-20 Lower Motor Mount Kit 1988-2006 Harley-Davidson FLT/FLHT/FXR/FXRS - Chrome Plated
1 review $44.89

Colony #9522-22 Upper & Lower Motor Mount Kit 1937-1947 Harley-Davidson Big Twin Side Valve - CAD Plated
$43.82

Colony #9855-28 Upper & Lower Motor Mount Kit 1984-1999 Harley-Davidson Softail - Zinc Plated
2 reviews $42.00

Colony #9625-16 Lower Motor Mount Kit 1930-1936 Harley-Davidson VL All 45 's - Chrome Plated
$38.73

Colony #9860-20 Lower Motor Mount Kit 1988-2006 Harley-Davidson FLT/FLHT/FXR/FXRS
$36.94

Colony #9772-22 Lower Motor Mount Allen Screw Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1 review $33.84

Colony #9779-5 Top Motor Mount Hardware Kit 1932-Up Harley-Davidson 45's - Chrome Plated
$13.55

Colony #9781-5 Top Motor Mount Hardware Kit 1932-Up Harley-Davidson 45's - Parkerized
1 review $10.37

Colony #8871-13 Upper Motor Mount Kit Acorn Head 1986-Up Harley-Davidson Sportster - Chrome Plated
$20.27

Colony #8165-19 Upper And Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin OHV - CAD Plated
3 reviews $52.45

Colony #7408-10 Over Length Front Motor Mount Studs With Acorn Nuts 1957-1985 Sportster - Chrome Plated
3 reviews $21.12

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