What ATV Suspension Data Should You Send to a Supplier for an RFQ?

A useful ATV suspension RFQ data package should identify the vehicle, installation position, shock dimensions, mounting interfaces, vehicle and rider loads, spring information, terrain, modifications, current suspension problem, target performance, required customization, sample requirements, expected order volume, and approval criteria. Sending only a vehicle model and target price rarely gives the supplier enough information to determine whether an existing shock can be quoted or whether engineering work is required. BEDO’s ATV shock measurement guide also treats length, stroke, mounting dimensions, spring information, vehicle load, and installation conditions as separate inputs rather than reducing an inquiry to one overall dimension.

For buyers, the objective of a good RFQ is not simply to receive a lower price faster. It is to make competing quotations refer to the same technical requirement, so price, samples, development work, and lead time can be compared on a meaningful basis.

Start the RFQ with Exact Vehicle Identification

The first section should tell the supplier exactly which ATV platform is involved. Include the make, model, model year, variant, front or rear position, quantity of shocks per vehicle, and whether the vehicle is standard or modified. If you are developing suspension for a new vehicle platform, provide the internal platform code and the relevant suspension drawings instead of forcing the supplier to guess an equivalent production model.

Vehicle identification matters because visually similar ATVs can use different mounting widths, shock lengths, springs, or suspension geometry. Model-year changes, trim differences, 2WD/4WD configurations, larger tires, lift components, accessories, or revised control arms may also affect the required shock.

For an aftermarket product line, create a separate application record for every SKU you intend to sell. BEDO’s ATV shock absorber fitment guide explains why one successful installation should not automatically be expanded to similar years or variants without supporting evidence.

Provide Extended Length, Compressed Length, and Stroke Separately

“Shock length” is too ambiguous for an OEM or custom RFQ. Supply at least the extended dimension, compressed dimension, usable stroke, and the exact reference points from which each dimension is measured.

Do not silently convert a supplier’s “total length” into eye-to-eye length unless the drawing proves that the measurement is taken between mounting centers.BEDO’s public ATV shock pages illustrate this point because published models use the term total length, which should remain that terminology until measurement references are confirmed.

Measure the Upper and Lower Mounting Interfaces

Mounting information should be treated as its own RFQ section. Record the upper and lower structure separately, including hole diameter, mounting width, sleeve or bushing dimensions, mounting orientation, and any spacer or hardware requirements.

Two shocks can share the same stroke and bolt diameter while still being incompatible. For example, BEDO’s AU_HSA_01 and AU_HSA_03 both publish a 130 mm effective stroke and 10 mm upper/lower mounting holes, but their total lengths and mounting widths differ.

This is why an ATV suspension RFQ should include a drawing or clearly labeled measurements instead of asking the supplier to identify a product from photographs alone.

Send the Original Shock or a Controlled Drawing When Possible

An existing shock can be a useful starting point because the supplier can examine mounting construction, dimensions, spring packaging, body architecture, and other physical details. However, the sample should not be treated as the complete specification.

Before sending it, record any known damage or wear.Worn bushings, missing spacers, collapsed springs, bent mounting eyes, damaged threads, leakage, or previous modifications can change what the supplier measures. Tell the factory what should be reproduced and what should be corrected.

BEDO supports development from drawings, CAD files, existing samples, and vehicle requirements through its custom suspension development process. Combining a physical sample with controlled application data is usually more useful than sending either one alone.

Provide Vehicle, Rider, Cargo, and Accessory Loads

Load data is essential whenever the supplier is expected to recommend or develop the spring and damping rather than simply manufacture to an already frozen specification. Provide the ATV’s relevant operating condition, rider weight with normal riding equipment, permanent accessories, typical cargo, and heavier intended operating conditions within the vehicle’s permitted limits.

Where practical, provide front and rear axle loads rather than only total vehicle mass. Load location matters. A winch mounted ahead of the front axle affects the suspension differently from an equal mass mounted on a rear rack.

A useful load section might include:

If the project involves cargo applications, BEDO’s heavy-duty ATV suspension guide provides a useful framework for separating permanent load, variable cargo, spring support, and damping requirements.

Describe the Terrain and Duty Cycle

“Off-road” is too broad to guide suspension development. State where and how the ATV will actually operate. Farm roads, rocky mountain trails, sand, mud, forest tracks, washboard surfaces, rental fleets, hunting use, utility work, and recreational trail riding can produce very different suspension demands.

The RFQ should explain:

• representative terrain;
• typical operating speed;
• how frequently rough sections occur;
• approximate continuous operating duration;
• whether repeated impacts are important;
• whether the vehicle carries cargo during rough use;
• whether environmental exposure such as mud, water, dust, or coastal conditions matters.

This information becomes especially important when deciding between standard fixed-damping shocks and more advanced performance architectures. If the project asks for reservoir shocks, BEDO’s remote-reservoir suspension guide shows why operating duration and sustained suspension workload should be established before reservoir architecture is selected.

Describe the Current Suspension Problem in Measurable Terms

Instead of writing “the current shock is bad” or “we need better performance,” explain what the vehicle actually does.

Examples include:

• excessive rear sag under normal cargo;
• frequent bottoming on a defined terrain section;
• repeated bouncing after bumps;
• slow suspension recovery through consecutive impacts;
• harsh response to smaller terrain inputs;
• insufficient extension movement;
• shock body or spring interference;
• leakage after a known operating period;
• damping behavior that changes during prolonged rough use;
• inadequate clearance with larger tires or accessories.

A clear problem statement helps engineering distinguish between a spring issue, damping issue, geometry problem, fitment problem, or product-quality problem. BEDO’s custom ATV shock development guide similarly frames custom development around actual application requirements rather than generic requests for “stronger shocks.”

State Whether You Need Replacement or Performance Suspension

Your RFQ should clearly identify whether the target is a replacement product or a deliberate performance change.

For a replacement product, the priority may be verified fitment, suitable spring support, controlled damping, straightforward installation, stable quality, and repeatable supply.

For a performance project, define what should change compared with the existing suspension. Possible targets may include another rider/load range, additional cargo support, changed damping behavior, increased tuning flexibility, modified suspension travel, larger tires, or a specific terrain application.

BEDO’s replacement vs performance ATV suspension guide explains why these two purchasing strategies should not use the same development assumptions.

Specify Spring Data with Complete Units

If you already know the required spring, provide its specification rather than an informal description such as “hard spring,” “medium spring,” or “red spring.”

Useful spring information can include:

• spring rate with complete units such as N/mm or lb/in;
• free length;
• inner or outer diameter;
• wire diameter or other relevant section information;
• installed preload;
• load–deflection requirements where available;
• surface treatment or color requirement;
• required working range.

If spring development is part of the RFQ, send the vehicle/load data and performance target instead of selecting a rate without engineering support.

Do not assume preload and spring rate are interchangeable. For a linear spring, preload changes its installed starting condition but does not create a different spring rate. BEDO’s ATV spring-rate guidance provides additional context for buyers defining suspension requirements.

Describe the Damping Target Instead of Asking Only for a Force Number

If you already have a controlled damping specification, send the test method, measurement conditions, and acceptance range. A damping-force number without shaft speed, temperature, test method, spring/configuration reference, and other relevant conditions provides limited value.

If the target has not yet been developed, describe the vehicle behavior that needs to change and ask the supplier to propose an engineering route.

For adjustable products, specify whether you want:

• fixed damping;
• adjustable rebound;
• adjustable compression;
• separate compression and rebound;
• another defined architecture.

Also explain why adjustment is required. BEDO’s premium ATV adjustable-damping guide emphasizes that adjustment count alone does not define performance; the useful damping range and application matter more.

Include Tire, Wheel, Lift, and Accessory Modifications

A standard vehicle and a modified vehicle should not share one RFQ without documenting the modifications.

If larger tires are installed, include the tire dimensions, wheel information, and assembly weight if available. If the vehicle also has a winch, steel bumper, cargo box, skid protection, battery system, or other accessories, list each item and its location.

If the suspension geometry has been changed by a lift kit, longer control arms, new mounting points, or another structural modification, provide the relevant drawings or measurements. Do not expect the factory to infer geometry from the tire size.

BEDO’s larger-tire and accessory suspension guide explains why sprung load, unsprung mass, clearance, spring requirements, and damping should be evaluated separately.

Provide CAD or Suspension Geometry for Long-Travel Projects

If your goal is additional wheel travel, the supplier needs more than the requested shock stroke.Provide suspension hard points, shock-mount locations, wheel/tire envelope, control-arm geometry, and other relevant vehicle interfaces.

Shock stroke and wheel travel are not the same measurement. Their relationship depends on suspension geometry and shock mounting.

For this reason, an RFQ for long-travel ATV shock absorbers should describe the target wheel movement and provide enough geometry for the shock manufacturer to evaluate the required damper movement and packaging.

If full vehicle CAD contains sensitive information, ask the supplier which minimum suspension assemblies, hard points, or interface files are actually necessary.

Tell the Supplier What You Expect to Be Customized

Separate technical customization from commercial customization.

Technical changes can include shock dimensions, mounting interfaces, spring specifications, damping, reservoir architecture, or other relevant component requirements. Commercial changes can include spring color, logo, labels, cartons, product codes, instructions, and private-label packaging.

Your RFQ should identify each item as:

Required – must be included in the quotation.
Preferred – desirable but open to alternatives.
Supplier proposal – supplier may recommend an approach.
To be confirmed after samples – not yet frozen.

This distinction helps prevent an early sales discussion from accidentally becoming a final production specification.

Define Prototype and Sample Expectations

Tell the supplier what the first sample is expected to prove.Is it a dimensional sample, installation sample, functional prototype, performance prototype, branded sample, or pre-production reference?

For an engineering sample,specify what you expect to check:

BEDO’s suspension sample development process treats prototypes as an engineering-verification stage rather than simply an early unit sent for visual approval.

Send Your Quality and Acceptance Requirements Before Quotation

If your organization has required inspections or tests, include them in the RFQ instead of introducing them after the price has been agreed.

Possible project requirements can include:

• dimensional inspection;
• mounting-interface checks;
• damping verification;
• leakage checks;
• spring inspection;
• load testing;
• durability requirements;
• environmental testing;
• identification and traceability;
• pre-shipment inspection;
• retained samples;
• pilot-batch approval.

The exact requirements depend on the product and project. Do not request every possible test simply because it appears on a generic checklist.

Where certifications or quality-management documents matter to supplier qualification, request current copies and verify the company name, facility, scope, and validity. Do not assume that a historical or company-level certificate proves a specific shock model meets every product requirement.

Provide Product Identification and Private-Label Requirements

For distributor and private-label programs, define how every technical version will be identified.

Useful information can include:

• buyer SKU;
• supplier model;
• product label;
• spring color;
• logo position;
• carton label;
• barcode requirement;
• application information;
• instruction sheet;
• package quantity;
• supplied mounting hardware.

Different spring or damping configurations should not become indistinguishable just because they use the same exterior color.BEDO’s private-label ATV suspension guide provides a useful framework for keeping technical approval connected to branding and packaging approval.

State Prototype Quantity, Pilot Quantity, and Production Forecast Separately

An RFQ saying only “quantity 1,000” may make it difficult for the supplier to distinguish development from eventual production.

Separate:

Prototype quantity – units required for engineering evaluation.
Pilot quantity – smaller production run used to verify repeatability.
Initial commercial order – first sellable production volume.
Expected repeat order – likely replenishment quantity.
Annual forecast – planning estimate if available.

This information helps a supplier evaluate manufacturing approach, sourcing, production scheduling, tooling or fixture requirements, and commercial terms.

BEDO supports low-volume shock absorber OEM development, but exact MOQ, sample quantity, available production capacity, and timing should still be confirmed for the specific configuration.

Do Not Ask for One Undefined “Lead Time”

Separate engineering and production stages in the RFQ.

A useful schedule request can include:

Technical review → Drawing confirmation → Prototype preparation → Buyer testing → Revision → Pilot batch → Production → Inspection → Shipment

This makes it clear whether a quoted lead time begins before or after drawings are frozen, samples are approved, artwork is confirmed, or payment is received.

If certification, tooling, new components, or substantial development is involved, identify that work separately rather than expecting the same schedule as an existing catalog product.

Tell Suppliers How You Want Pricing Broken Down

A meaningful quotation should separate costs that repeat on every order from development costs that may occur only once.

Ask suppliers to identify, where applicable:

• prototype price;
• engineering/development charges;
• tooling or fixtures;
• testing;
• recurring shock price;
• special spring/configuration cost;
• branding;
• packaging;
• spare parts;
• inspection;
• freight scope.

This structure makes quotations easier to compare. A supplier offering a lower unit price but excluding development and testing is not necessarily cheaper than one quoting a broader project scope.

Use One RFQ Version for Every Shortlisted Supplier

Once the requirements are prepared, freeze an RFQ revision and send the same version to each supplier. If the specification changes, issue another revision and record the change.

This prevents a common purchasing problem: Supplier A quotes the original requirement, Supplier B quotes an updated requirement, and procurement later compares the prices as though they represent identical products.

A simple revision block can include:

How Does Complete ATV Suspension RFQ Data Improve Supplier Evaluation?

A detailed RFQ lets you compare more than price. You can evaluate whether each supplier understands the application, identifies missing information, challenges unsafe assumptions, proposes sensible validation, and distinguishes standard manufacturing from engineering development.

A strong response should tell you:

• whether an existing model is a realistic starting point;
• what information remains missing;
• what must be customized;
• which prototype is recommended;
• what testing is needed;
• what the quotation includes;
• what the commercial assumptions are.

A supplier that immediately promises compatibility, performance, and delivery without asking for critical missing data may actually provide less useful engineering support than one that returns a structured technical-question list.

BEDO’s ATV shock absorber supplier selection guide uses this same principle: evaluate the quality of the supplier’s engineering response, not simply response speed.

Prepare a BEDO RFQ in One Complete Package

Ningbo Bedo Auto Parts Co., Ltd. manufactures shock absorbers and suspension springs and supports design, customization, sample-based development, and small-batch projects. Buyers can review BEDO’s company and manufacturing capabilities and its ATV/UTV shock absorber products before preparing the inquiry.

For a project-specific quotation, package the following information together:

Vehicle identification + shock position + dimensions + mounting interfaces + original shock/drawing + vehicle/rider/cargo loads + tire/accessory modifications + terrain/duty cycle + existing problem + spring requirement + damping requirement + customization + validation requirements + branding/packaging + sample quantity + production forecast.

Then contact BEDO and ask the engineering team to separate confirmed requirements, missing information, recommended development work, sample scope, commercial assumptions, and production conditions.

Frequently Asked Questions

1. Can I request an ATV suspension quote with only the vehicle model?

You can start an inquiry, but a reliable technical quotation may require additional year, variant, installation, mounting, dimensional, load, and application information. More complete data reduces the assumptions the supplier must make.

2. Do I need both extended and compressed shock dimensions?

Yes, particularly for custom development and accurate fitment review. Extended length alone cannot show whether the shock will reach its compression limit too early or maintain adequate suspension movement.

3.Is a photo of the original shock enough for an RFQ?

Usually not for a technical quotation. Photos help identify structure, but drawings, measurements, vehicle information, and a sample where available provide a much stronger basis. BEDO’s measurement guide explains the additional information required.

4. Should I include rider weight in an ATV suspension RFQ?

Include ready-to-ride rider weight when the supplier is evaluating spring or damping requirements. Cargo, permanent accessories, and vehicle load distribution should also be included where relevant.

5. Do I need to provide a spring rate?

If you already have an approved rate, provide it with complete units and associated spring requirements. If not, provide vehicle load and performance information and identify spring selection as a development requirement.

6.Should I give the supplier my target damping force?

Only if it is based on a controlled engineering specification with defined test conditions. Otherwise describe the vehicle behavior and performance target and ask the supplier to propose a development approach.

7. What data is needed for an ATV with larger tires?

Provide original and new tire/wheel dimensions, assembly weight where available, suspension modifications, clearance concerns, vehicle loads, and relevant geometry. See BEDO’s modified ATV shock guide.

8. What additional data is needed for long-travel suspension?

Provide suspension hard points or relevant CAD, shock mounts, target wheel travel, existing damper movement, wheel/tire envelope, control-arm geometry, load information, and intended terrain. BEDO’s long-travel development guide covers these requirements in more detail.

9. Should MOQ and lead time be included in the first RFQ?

Yes, but separate prototypes, pilot orders, volume orders, and repeat orders. Ask for staged timing rather than one undefined lead-time number.

10. What is the minimum data set I should send BEDO?

At minimum, send the ATV application, front/rear position, existing shock or measurements, mounting dimensions, vehicle and rider/load information, intended terrain, current problem, required quantity, and available photos, sample, or drawings. More complete ATV suspension RFQ data allows a more meaningful engineering and quotation review.

Conclusion

A strong ATV suspension RFQ data package should make the application understandable before the supplier quotes the product. Start with the exact vehicle and shock position, then provide extended and compressed dimensions, stroke, mounting interfaces, vehicle/rider/cargo loads, spring information, terrain, modifications, current suspension behavior, and the performance objective.Add samples or drawings, quality and validation requirements, private-label details, prototype quantities, production forecasts, and staged timing so technical development and commercial supply are clearly separated. The objective is not to create the longest RFQ possible; it is to eliminate assumptions that could later cause incorrect fitment, repeated prototypes, quotation changes, or unsuitable production. BEDO supports ATV shock absorber and spring manufacturing, customized development, samples, and low-volume projects. To request a technical review, contact BEDO with your complete ATV suspension RFQ data so the team can determine whether an existing configuration, modified product, or custom development route is appropriate before quotation and sample approval.