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.

Triumph 5 Motorcycle Engine

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British Standard Stainless Steel Top Motor Mounts / Head Steadies for unit Triumph Motorcycles
14 reviews $29.86

British Standard Engine Oil Seal Kit - 7 Piece - 1963 - 1972 Triumph Unit 650
21 reviews $50.19

British Standard Triumph Cylinder Base Nut Set Unit 650cc 1969-1972 OEM # S692 21-0692
5 reviews $25.32

Lowbrow Customs Triumph Oil Feed Chrome Rocker Box Acorn Nuts and Copper Washers #70-1435 70-1335
11 reviews $28.93

British Standard Pushrod Tube Seal Kit - Triumph 650
18 reviews $26.46

British Standard Rocker Cover Washers - 4 Pack - Triumph Unit 500 650
5 reviews $6.86

EMGO Triumph Oil Seal- High Gear for 4 Speed Triumph- OEM part# 57-0946
9 reviews $8.51

British Standard Rotor Key - Triumph Unit 650 750
2 reviews $8.37

Lowbrow Customs Triumph Oil Feed Brass Rocker Box Acorn Nuts and Copper Washers
18 reviews $28.93

British Standard Sludge Tube for your 650cc 750cc Triumph Motorcycle OEM # 70-3903
6 reviews $27.52

British Standard Triumph Oil Seal-Timing Cover Points Seal- OEM part# 70-4568
12 reviews $13.24

British Standard Ignition Pillar Bolt - Triumph / BSA
7 reviews $7.60

EMGO Triumph Oil Seal- Crankshaft- OEM part# 70-3876
2 reviews $8.04

British Standard Triumph Cylinder Base Nut Set Unit and Pre-Unit 650cc 1946-1968 OEM # P0172A 37-0076
5 reviews $22.67

British Standard Engine and Transmission Lock Tab Set - 1963 - 1972 Triumph 650 with 4 Speed Gearbox
14 reviews $20.86

British Standard Triumph Crankshaft Main Bearing- Right Side- OEM part# 70-1591
3 reviews $84.22

British Standard Allen Sludge Trap Plug for your Triumph Motorcycle
9 reviews $22.33

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