Shock Absorber Size Calculator

Shock Absorber Size Calculator

FAQs

  • How do I know what size shock absorbers to get? Determining the right shock absorber size involves considering factors such as your vehicle's make and model, intended use (street, off-road, towing), and any lift or suspension modifications. Manufacturers and vehicle-specific guides often provide size recommendations.
  • How do I choose the right shock length? The right shock length depends on your vehicle's suspension design, lift or lowering, and desired travel. Measure the distance between mounting points with the suspension fully extended and compressed, then choose a shock within that range.
  • How do you measure a rear shock absorber? Measure the rear shock absorber's extended and compressed lengths. Extend the shock fully and measure from the center of the top mounting hole to the center of the bottom mounting hole for the extended length. Do the same when the shock is fully compressed.
  • How do you calculate ACE (Alternate Compression/Extension)? ACE is typically calculated by measuring the difference between the extended and compressed lengths of a shock absorber. ACE helps determine the shock's effective travel.
  • What happens if your shocks are too long? If shocks are too long, they may bottom out or damage other suspension components when the suspension compresses fully. This can lead to a harsh ride and potential safety issues.
  • Do I need longer shocks for a 6-inch lift? Yes, a 6-inch lift typically requires longer shocks to accommodate the increased suspension travel. Lift kit manufacturers often provide shock recommendations.
  • Where do you measure shock length? Measure the shock length from the center of the top mounting hole to the center of the bottom mounting hole while the shock is fully extended and fully compressed.
  • Are longer shocks better? Longer shocks can be better for lifted vehicles as they provide the necessary travel and prevent shock bottoming out. However, the length should match the suspension design and lift.
  • Do I need longer shocks for a 2-inch lift? A 2-inch lift may or may not require longer shocks. It depends on your vehicle's suspension design and intended use. Check with the lift kit manufacturer for recommendations.
  • What do the numbers on a shock absorber mean? The numbers on a shock absorber typically represent its extended and compressed lengths, helping you determine its size and travel.
  • How tight should rear shock absorbers be? Shock absorber mounting bolts should be tightened to the manufacturer's recommended torque specifications, typically specified in the vehicle's service manual.
  • Can I put a longer shock on my bike? Installing a longer shock on a bike can alter its geometry and handling characteristics. Consult with a professional bike mechanic to ensure compatibility and safety.
  • What is the ACE scale? The ACE (Alternate Compression/Extension) scale is used to measure the effective travel of a shock absorber. It's the difference between the extended and compressed lengths.
  • What does a 5 ACE score mean? An ACE score of 5 typically indicates that the shock absorber has a moderate amount of travel or compression/extension capability.
  • What does an ACE score of 4 mean? An ACE score of 4 suggests a shock absorber with less travel than an ACE score of 5, indicating a shorter effective travel distance.
  • How long can rear shocks last? The lifespan of rear shocks varies depending on usage and conditions. On average, they may last 50,000 to 100,000 miles. Regular inspection is essential.
  • What are the symptoms of bad shock absorbers? Symptoms of bad shock absorbers include excessive bouncing, uneven tire wear, reduced handling, and a harsh or uncomfortable ride.
  • Can shocks last 30 years? Shocks can potentially last a long time, but their lifespan is more commonly measured in miles driven rather than years. Proper maintenance is crucial.
  • What size shocks for a 2.5-inch lift? A 2.5-inch lift often requires shocks that are longer than stock to accommodate the increased suspension travel. Consult your lift kit manufacturer for specific recommendations.
  • Does a leveling kit require longer shocks? A leveling kit may or may not require longer shocks, depending on the vehicle and kit design. It's advisable to check with the kit manufacturer for guidance.
  • Do I need new shocks with a 2.5-inch leveling kit? Whether you need new shocks with a 2.5-inch leveling kit depends on your vehicle's existing shocks and their condition. Evaluate them and replace if necessary.
  • How does shock sizing work? Shock sizing involves determining the extended and compressed lengths needed to fit your vehicle's suspension and lift or lowering modifications.
  • How far should a shock extend? The extent to which a shock should extend depends on your vehicle's suspension design and lift or lowering. Measure and choose shocks that fit within that range.
  • What are the best shocks for lifted trucks? The best shocks for lifted trucks vary depending on factors like intended use, budget, and personal preferences. Brands like Bilstein, Fox, Rancho, and others are popular choices.
  • Can I put longer shocks on my truck? Yes, you can put longer shocks on your truck, but they should be compatible with your suspension design and lift.
  • Do shocks have a shelf life? Shock absorbers do not have a specific shelf life, but they can deteriorate over time due to exposure to the elements. Regular inspection is important.
  • Are upgraded shocks worth it? Upgraded shocks can improve ride quality and performance, especially for specific driving conditions or off-road use. Whether they're worth it depends on your needs.
  • Can I use stock shocks with a 2-inch lift? You can use stock shocks with a 2-inch lift, but it's often recommended to use shocks designed for the increased suspension travel to optimize performance.
  • Why is the back of my truck higher than the front? A truck's rear end may appear higher than the front due to design, suspension settings, cargo weight, or suspension modifications.
  • Will different shocks make my truck ride smoother? Upgrading to appropriate shocks can improve ride quality and smoothness, especially if your current shocks are worn or not suited to your vehicle's setup.
  • What does 2.5 mean in shocks? The "2.5" in shocks typically refers to the shock's diameter in inches, indicating a larger-diameter shock often used for heavy-duty or off-road applications.
  • What is the difference between 70/30 and 90/10 shocks? 70/30 and 90/10 shocks refer to shock absorber valving ratios. 70/30 shocks have more compression damping, while 90/10 shocks have more rebound damping.
  • Which shock absorber to choose? Choosing the right shock absorber depends on your vehicle, intended use, and personal preferences. Research and consult with experts or manufacturers for recommendations.
  • What happens if rear suspension is too stiff? If the rear suspension is too stiff, it can result in a harsh ride, reduced traction, and poor handling, especially over rough terrain.
  • Do you need to torque shock absorbers? Yes, it's important to torque shock absorber mounting bolts to the manufacturer's specifications to ensure proper installation and safety.
  • Is it OK to just replace rear shocks? It's acceptable to replace just the rear shocks if they are the only worn components. However, for optimal performance, consider inspecting and replacing front shocks as well.
  • How do I know if a shock will fit my bike? To ensure a shock fits your bike, check its compatibility with your bike's make, model, and suspension design. Measure the shock's dimensions if necessary.
  • What does a piggyback do on a rear shock? A piggyback reservoir on a rear shock helps dissipate heat and provides additional oil volume, improving shock performance under heavy use.
  • Does shock preload change ride height? Adjusting shock preload can affect ride height by compressing or extending the shock, but it's primarily used to fine-tune suspension sag and stiffness.
  • What does my ACE score of 7 mean? An ACE (Alternate Compression/Extension) score of 7 indicates a shock absorber with a longer effective travel compared to lower ACE scores.
  • What is a 7 on the ACE scale? An ACE score of 7 suggests a shock absorber with a relatively long effective travel, suitable for applications requiring extended suspension travel.
  • Is an ACE score of 7 bad? An ACE score of 7 is not inherently bad; it simply indicates a shock with a specific travel length. Whether it's suitable depends on your suspension needs.
  • What is the most common ACE score? ACE scores can vary widely depending on the intended application and vehicle setup. There is no single "most common" ACE score.
  • How do I calculate my ACE score? Calculate your ACE (Alternate Compression/Extension) score by measuring the difference between a shock absorber's extended and compressed lengths.
  • What does a 10 ACE score mean? An ACE score of 10 indicates a shock absorber with an extended travel length suitable for applications requiring maximum suspension travel.
  • What is a good ACE score? A good ACE (Alternate Compression/Extension) score depends on your specific suspension needs and whether the shock's travel length matches your requirements.
  • Is 6 a bad ACE score? An ACE score of 6 is not inherently bad. It indicates a shock with a particular travel length that may be suitable for certain applications.
  • What is an ACE score of 8? An ACE score of 8 suggests a shock absorber with an extended travel length, often used in applications requiring increased suspension travel.
  • Should you replace all 4 struts at once? It's advisable to replace all four struts or shock absorbers at once to ensure consistent handling and performance, especially if they are worn or damaged.
  • How many hours does it take to replace shocks? The time required to replace shocks varies depending on the vehicle and the mechanic's experience. On average, it can take 2-4 hours for a professional.
  • Do you need an alignment after replacing struts? Yes, it's recommended to get a wheel alignment after replacing struts to ensure proper tire wear and vehicle stability.
  • What sound does a bad shock absorber make? Bad shock absorbers can produce knocking, clunking, or squeaking sounds when driving over bumps or uneven surfaces.
  • Can you still drive with bad shocks? You can drive with bad shocks, but it can result in reduced handling, comfort, and safety. It's essential to replace them for optimal performance.
  • Can shock absorbers last 20 years? Shock absorbers can potentially last 20 years, but their lifespan is more commonly measured in miles driven rather than years. Proper maintenance is essential.
  • Can struts last 200,000 miles? Struts can potentially last 200,000 miles or more, depending on driving conditions and maintenance. Regular inspections are important.
  • Can shocks last 150,000 miles? Shocks can last 150,000 miles or more, but their lifespan can vary based on usage and conditions. Regular inspection is essential.
  • Do I need longer shocks for a 3-inch lift? A 3-inch lift typically requires longer shocks to accommodate the increased suspension travel. Refer to the lift kit manufacturer's recommendations.
  • What is the difference between 2.0 and 2.5 shocks? The difference between 2.0 and 2.5 shocks is their diameter in inches. 2.5 shocks have a larger diameter, which can provide more damping capability and durability.
  • Do I need new shocks with a 2.5-inch leveling kit? Whether you need new shocks with a 2.5-inch leveling kit depends on your vehicle's existing shocks and their condition. Evaluate them and replace if necessary.
  • Do I need longer shocks with a 2-inch leveling kit? A 2-inch leveling kit may or may not require longer shocks, depending on the vehicle and kit design. Consult with the kit manufacturer for guidance.
  • Is a 2-inch leveling kit the same as a 2-inch lift? A 2-inch leveling kit is not the same as a 2-inch lift. A leveling kit typically levels the front and rear of the vehicle, while a lift kit raises the entire vehicle.
  • Does a leveling kit require longer shocks? A leveling kit may or may not require longer shocks, depending on the vehicle's suspension design and the kit's design. Consult with the kit manufacturer for recommendations.
  • How do I know what size rear shock I need? To determine the size of rear shocks you need, measure the extended and compressed lengths required for your specific suspension setup and lift.
  • How do you read shock sizes? Shock sizes are typically read as the extended length and compressed length, measured from the center of the top mounting hole to the center of the bottom mounting hole.
  • Are longer shocks better? Longer shocks can be better for specific applications and lifted vehicles as they provide the necessary suspension travel. However, the length must match your vehicle's setup.
  • Where do you measure shock length? Measure shock length from the center of the top mounting hole to the center of the bottom mounting hole while the shock is fully extended and fully compressed.
  • How do I know what size shocks I need for my lifted truck? To determine the size of shocks you need for your lifted truck, measure the required extended and compressed lengths based on your suspension setup and lift height.
  • What will make a lifted truck ride smoother? A smoother ride for a lifted truck can be achieved by selecting appropriate shocks, maintaining proper tire pressure, and ensuring your suspension components are in good condition.
  • Will different shocks make my truck ride smoother? Upgrading to appropriate shocks can improve ride quality and smoothness, especially if your current shocks are worn or not suited to your vehicle's setup.
  • Will stock shocks work with a 4-inch lift? Stock shocks may work with a 4-inch lift temporarily, but it's recommended to replace them with longer shocks designed for the increased suspension travel.
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These answers provide information on shock absorbers, sizing, and related topics to help you make informed decisions about your vehicle's suspension components.

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