Motorcycle Engine, Exhaust, Maintenance & Protection
Keep your V-Twin running at peak power and fully protected with our complete Engine, Exhaust, Maintenance & Protection collection — from internal engine performance to road-ready security.
Maximize power, airflow, and engine reliability with full exhaust systems, slip-on mufflers, heat shields, and baffle inserts alongside high-flow air cleaner intake kits. Upgrade your engine's powerhouse with big bore cylinder kits, performance camshafts, oil pumps, cooling upgrades, and precision engine covers. Keep every connection sealed with complete top-end and bottom-end gaskets, exhaust port seals, primary cover gaskets, and durable O-rings for leak-free street performance.
Keep your machine running smoothly and fully secure with premium engine oils, lubricants, high-flow oil and fuel filters, and durable oil system hardware. Enhance your bike's stance and safety with custom wheels, high-traction tires, wheel accessories, and heavy-duty front engine guards and rear saddlebag guards. Finish your build with advanced anti-theft security locks, disc locks, and mounting hardware to protect your investment on and off the road.
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MotorFactory 1340cc STD Pistons Fit For ShovelheadsFitment: Fit For 1340cc Shovelheads Product Information: These cast aluminum pistons provide a lower-cost alternative. They -re available in stock compression versions only and come with fitted wrist pins and late-style piston -E - clips. The pistons will accept our replacement Motor Factory piston...
- $29.69
- $29.69
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Custom Chrome Fuel Line Support Fit For Harley most models 66-89 Replace for 45092-66Fitment: Fit For Harley most models 66-89 Product Information: Routes the fuel line between the cylinders. Chrome duplicateof the support on most models 66-89. Installs on lower intake manifold flange bolt. Replacement : Replaces For 45092-66 Easy to install. Package Included: 1 Set Fuel...
- $9.99
- $9.99
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Custom Chrome Heavy-Duty Top Motor Mount Fit For Harley Davidson Softail Standard 1984-2010Fitment: Fit For Harley Softail 1984-2010 Product Information: These mounts are made from 1/4"-thick plate steel (33% thicker than stock) delivering the ultimate in strength and style. They include chrome choke/horn brackets. The mount for Softail models also includes chrome sockethead mounting hardware Easy...
- $49.99
- $49.99
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Custom Chrome New High Performance Motorcycle Smooth Air Filter Kit Cross Cover 5 Spades BlackProduct Information: BLK HP 5-SPLADE A/C COVER Package Included: As pictures shown * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $39.99
$66.99- $39.99
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Custom Chrome New High Performance Motorcycle Smooth Air Filter Kit Cross Cover 4-Spade BlackProduct Information: Air Filter Kit Cross Cover Smooth Package Included: As pictures shown * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $34.99
$63.99- $34.99
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Custom Chrome New High-performance Motorcycle Cross Air Cleaner Cover Kit Smooth Custom ChromeProduct Information: Air Filter Kit Cross Cover Smooth Package Included: As pictures shown * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $39.99
$66.99- $39.99
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Custom Chrome Moto Motorcycle Carb Chrome Star Enrichener Choke Knob Fit For S & S CarburetorsFitment: Fit For Star, Enricher Knob for S&S Product Information: Tired of that boring choke knob on your carb Try one of these three knobs to add good looks to good function. They fit S&S Super E, B and G Carburetors. Package Included: As...
- $24.99
- $24.99
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Custom Chrome Moto Motorcycle Carb Chrome Cross Enrichener Choke Knob For S & S CarburetorsFitment: Fit For Solid Cross, Enricher Knob for S&S Product Information: Tired of that boring choke knob on your carb Try one of these three knobs to add good looks to good function. They fit S&S Super E, B and G Carburetors. Package Included:...
- $24.99
- $24.99
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Twin Cam Cam Cover Black Chrome Fit For Harley 2001-2014 Twin Cam Replaces #25369-01 Chrome
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Chrome
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Black
Fitment: Fits all 01-14 Twin Cam models (Replaces For OEM #25369-01) Product Information: Available in either a chrome-plated or black powder-coated finish. A great replacement cover with a fit and finish that matches OEM parts. Hardware included. Color: Chrome / Black Package Included: As...- From $58.99
$99.99- From $58.99
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Custom Chrome Rubber Oil Seal Fit For Harley Replace For 41210-55Fitment: Fit For Harley Replace For 41210-55 Product Information: Rubber Oil Seal Replace For 41210-55 Pack Of 10 No instructions. Package Included: 10pcs Oil Seal Set * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $11.69
- $11.69
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Custom Chrome Universal Army Green 9 - Canvas Exhaust Heat Shields PlainFitment: Fit For Universal Product Information: Finally a heat shield that really works and looks great. These universal exhaust heat shields fit most bikes with 1-3/4" and 2" diameter pipes. Made from 14 gauge steel, covered with high quality cowhide leather or 24oz. Military...
- $39.99
$76.99- $39.99
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Custom Chrome Oil Seal Fit For Harley Big Twin Cam Models 94-Up Replaces For 12067BFitment: Fit For Harley Big Twin Cam Models 94-Up Product Information: Replaces For OEM# 12067BNo instructions. Package Included: 1x Seal * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $32.99
$46.99- $32.99
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Custom Chrome Mainshaft Bearing Oil Seal Fit For Harley All 5-Speed Twin Cam Models 99-06Fitment: Fit For Harley All 5-Speed Twin Cam Models 99-06 (Except 06 Dyna) Product Information: Replaces For OEM# 11165 No instructions. Package Included: 1x Seal * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $9.99
- $9.99
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Custom Chrome Oil Pump Key Fit For Harley Big Twin Models 1936-1999 Sportster Models 1972-1985Fitment: Fits For Harley Evolution Big Twins 84-99Fits For Harley Shovelhead Big Twins 66-84Fits For Harley Panhead Big Twins 48-65Fits For Harley Knucklehead Big Twins 36-47Fits For Harley Sportster Models 72-85 Product Information: Sold in 10 packsReplaces OEM 26348-15 Package Included: 10 x keys...
- $5.99
- $5.99
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MotorFactory 5Pcs Rear Master Cylinder Boots Fit For Harley XL XLH1000 FX FXS 1980-1987Fitment: Fit for the rear master cylinder on most models 1980-1987 Product Information: No instructions. Package Included: 5x Master Cylinder Boot (as shown in picture) * California Residents Warning: California's Proposition 65. For more Information Please Visit - https://www.p65warnings.ca.gov/
- $21.99
- $21.99
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Custom Chrome Oil Tank Cap Dipstick Fit For Harley FL FX 1971-1985 XLCH 1970-1978Fitment: Fit for Harley FL models from 70-84, FX models from 71-85, FXR models from 82-83, FLT models from 80-86 and XLCH models from 70-78 Product Information: Long Dipstick,Chrome-plated replacements for Original Equipment dipsticks. No instructions. Package Included: 1x Oil Tank Dipstick (as shown...
- $12.99
- $12.99
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MotorFactory Rocker Arm Seal Kit Fit For Harley Shovelhead models 1966-1984Fitment: Fit For Harley Shovelhead models 66-84 Product Information: Reduces top end noise with special pre-loaded spring shims installed on the pushrod side of the rocker shaft. The seals are designed toconform to the rocker shaft and cover hole for a positive seal. No...
- $8.99
- $8.99
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Custom Chrome Push Rod Cover O-ring Quad Seals Fit For Harley Shovelhead From Late 1979-1984Fitment: Fit For Harley Shovelhead models from late 1979-1984 Product Information: Complete push rod cover sets include inner and outer pushrod covers, springs, spring cups,retainers, washers, and seals. No instructions. Package Included: Push Rod Cover O-ring Quad Seals (as shown in picture) * California...
- $86.39
- $86.39
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Custom Chrome Front Cylinder Fit For Harley Shovelhead 66-84 80" Bore Replace For 16498-80AFitment: Fit For Harley Shovelhead engines from 1966-1984 with 80" Bore Product Information: Cast iron alloy cylinders. Replace for 16498-80A (Front) Cylinders come bored for standard 80" (1340 cc), 5.330" stock length. Final honing is required. Pistons are not included. Sold each. No instructions....
- $179.99
- $179.99
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Custom Chrome Intake Seal Kit Fit For Harley Big Twin Sportster Replace For 26995-86A 27002-89Fitment: Fit For Harley Big Twins from 90-Up and Sportster models from 88-Up Product Information: This kit contains the parts necessary to reseal the intake manifold. Kits sold in packs of 3 Replace For 26995-86A and 27002-89 No instructions. Package Included: 3x Intake Seal...
- $18.99
$27.49- $18.99
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