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title: Product Support | Help Center
description: Looking for application information or product specs? Find it here in our Product Support database.
---
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1. [Help Center](https://academy.bilsteinus.com/knowledge)
2. [Product Support](https://academy.bilsteinus.com/knowledge/product-support)
# Product Support
Looking for application information or product specs? Find it here in our Product Support database.
- [Why does BILSTEIN want my VIN number?](https://academy.bilsteinus.com/knowledge/why-does-bilstein-want-my-vin-number)
- [How do I measure collapsed and extended length?](https://academy.bilsteinus.com/knowledge/how-do-i-measure-collapsed-and-extended-length)
## General Product Questions
- [Does BILSTEIN have shocks for my vehicle?](https://academy.bilsteinus.com/knowledge/do-you-have-shocks-for-my-vehicle)
- [Why Bilstein 4600 and 5100 Struts Should Be Paired with OE Springs](https://academy.bilsteinus.com/knowledge/why-bilstein-4600-and-5100-struts-should-be-paired-with-oe-springs)
- [Are 5100's a heavy-duty shock?](https://academy.bilsteinus.com/knowledge/are-5100s-a-heavy-duty-shock)
- [Will your shock increase my towing capacity?](https://academy.bilsteinus.com/knowledge/will-your-shock-increase-my-towing-capacity)
- [RAM Cab and Chassis Compatibility](https://academy.bilsteinus.com/knowledge/ram-cab-and-chassis-compatibility)
- [If a shock absorber or steering damper is not supplied with a dust boot, is one required for proper operation?](https://academy.bilsteinus.com/knowledge/if-a-shock-absorber-or-steering-damper-is-not-supplied-with-a-dust-boot-is-one-required-for-proper-operation)
- [How do I know when my shock absorber has been worn past its life?](https://academy.bilsteinus.com/knowledge/how-do-i-know-when-my-shock-absorber-has-been-worn-past-its-life)
- [Does Bilstein offer fully assembled struts (“quick struts”)?](https://academy.bilsteinus.com/knowledge/does-bilstein-offer-fully-assembled-struts-quick-struts)
- [Why Are My Bilstein Shocks So Stiff?](https://academy.bilsteinus.com/knowledge/why-are-my-bilstein-shocks-so-stiff)
- [How do I properly store my Bilstein shock?](https://academy.bilsteinus.com/knowledge/how-do-i-properly-store-my-bilstein-shock)
- [Do I Need a Spring Compressor When Installing Bilstein Shocks or Struts?](https://academy.bilsteinus.com/knowledge/do-i-need-a-spring-compressor-when-installing-bilstein-shocks-or-struts)
- [What lift height does Bilstein recommend installing an upper control arm.](https://academy.bilsteinus.com/knowledge/why-does-bilstein-not-sell-individual-corners-or-components-from-pss-coilover-systems-separately)
- [How do I determine travel length?](https://academy.bilsteinus.com/knowledge/how-do-i-determine)
- [Do I need a reservoir?](https://academy.bilsteinus.com/knowledge/do-i-need-a-reservoir)
- [Mono-tube Versus Twintube](https://academy.bilsteinus.com/knowledge/whats-the-difference-between-monotube-versus-twintube-shocks)
- [What's the difference between B6 Performance and B8 Performance Plus?](https://academy.bilsteinus.com/knowledge/whats-the-difference-between-b6-performance-and-b8-performance-plus)
- [What is the difference between rebound and compression?](https://academy.bilsteinus.com/knowledge/rebound-and-compression)
- [What's the Difference Between B4, B6 and B8 Products?](https://academy.bilsteinus.com/knowledge/whats-the-difference-between-b4-b6-and-b8-products)
- [Are B8 Upper Control Arms Compatible with Non-BILSTEIN Shocks?](https://academy.bilsteinus.com/knowledge/does-the-b8-upper-control-arm-fit)
- [I purchased your product through an online retailer and they will not accept a return. What do I do?](https://academy.bilsteinus.com/knowledge/online-retailer-help)
- [When will my product be in stock?](https://academy.bilsteinus.com/knowledge/backorders)
- [If I level my truck, do I need longer shocks?](https://academy.bilsteinus.com/knowledge/if-i-level-my-truck-do-i-need-stock-height-shocks)
- [Are you associated with BilsteinLifts.com?](https://academy.bilsteinus.com/knowledge/are-you-associated-to-bilsteinlifts.com)
- [Can I buy your products if I'm located in a country outside of the U.S.?](https://academy.bilsteinus.com/knowledge/can-i-buy-your-products-if-im-located-in-another-country)
- [How do I know what spring to use on my coilover?](https://academy.bilsteinus.com/knowledge/how-do-i-know-what-spring-to-use-on-my-coilover)
- [Can I use a different motorhome shock on my coach?](https://academy.bilsteinus.com/knowledge/can-i-use-a)
- [What shocks fit my motorhome?](https://academy.bilsteinus.com/knowledge/what-shocks-fit-my-motorhome)
- [I'm missing hardware. How can i get it sent to me?](https://academy.bilsteinus.com/knowledge/how)
- [How can i buy replacement parts (small parts, single corners)?](https://academy.bilsteinus.com/knowledge/how-can-i-buy-small-parts)
- [What's the difference between 6112 and 8112?](https://academy.bilsteinus.com/knowledge/whats-the-difference-between-6112-and-8112)
- [B6 4600 Versus B8 5100](https://academy.bilsteinus.com/knowledge/4600-versus-5100)
- [You don't make shocks for my vehicle. Can I use another shock designed for a different vehicle with a similar chassis?](https://academy.bilsteinus.com/knowledge/can-i-use-another-shock-designed-for-a-different-vehicle)
- [How do I find shocks for my vehicle?](https://academy.bilsteinus.com/knowledge/product-search)
See less ▼
## Application/ Parts Catalog
- [What if the Bilstein catalog doesn’t show any products for my vehicle?](https://academy.bilsteinus.com/knowledge/what-if-the-bilstein-catalog-doesnt-show-any-products-for-my-vehicle)
- [I don't see a shock that is for my lift height, what should I use?](https://academy.bilsteinus.com/knowledge/i-dont-see-a-shock-that-is-for-my-lift-height-what-should-i-use-1)
- [Why isn't my RV model listed, even though you might carry a compatible damper?](https://academy.bilsteinus.com/knowledge/why-isnt-my-rv-model-listed-even-though-you-might-carry-a-compatible-damper)
- [Why Don’t You List Products for My Imported Vehicle, Even Though I’ve Seen Them in Other Countries?](https://academy.bilsteinus.com/knowledge/why-dont-you-list-products-for-my-imported-vehicle-even-though-ive-seen-them-in-other-countries)
- [Does Bilstein offer solutions or kits to remove or replace factory suspension systems such as Toyota XREAS, GM Magnetic Ride Control, electronic dampers, or air suspension setups?](https://academy.bilsteinus.com/knowledge/my-bilstein-shocks-didnt-come-with-install-instructions-and-how-do-i-find-them)
- [How do I find your online product catalog?](https://academy.bilsteinus.com/knowledge/how-do-i-find-your-online-product-catalog)
- [Your website says you do not make shocks for my car. Can I submit a request?](https://academy.bilsteinus.com/knowledge/submit-product-request)
See less ▼
- [Product Support](https://academy.bilsteinus.com/knowledge/product-support#main-content)
- [General Product Questions](https://academy.bilsteinus.com/knowledge/product-support#general-product-questions)
- [Application/ Parts Catalog](https://academy.bilsteinus.com/knowledge/product-support#application-parts-catalog)
- [Tech Support](https://academy.bilsteinus.com/knowledge/tech-support#main-content)
- [Installation](https://academy.bilsteinus.com/knowledge/tech-support#installation)
- [Tuning](https://academy.bilsteinus.com/knowledge/tech-support#tuning)
- [Service and Repair](https://academy.bilsteinus.com/knowledge/service-and-repair#main-content)
- [Shock Repair/ Refurbish Services](https://academy.bilsteinus.com/knowledge/service-and-repair#shock-repair-refurbish-services)
- [Warranty](https://academy.bilsteinus.com/knowledge/warranty#main-content)
- [Warranty Policy](https://academy.bilsteinus.com/knowledge/warranty#warranty-policy)
- [Sales Support](https://academy.bilsteinus.com/knowledge/sales-support)
- [Marketing/Other](https://academy.bilsteinus.com/knowledge/marketing-other)
- [Careers](https://academy.bilsteinus.com/knowledge/careers#main-content)
- [Careers](https://academy.bilsteinus.com/knowledge/careers#careers)
- [Podcast - BILSTEIN Shock Talk](https://academy.bilsteinus.com/knowledge/podcast-bilstein-shock-talk)
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