10 Best Custom Crossbow Replacement Strings For 2026: Top Picks for Fit, Speed, and Durability

Choosing the right replacement string matters more than many crossbow owners expect. The wrong fit can hurt accuracy, reduce speed, and wear out faster than it should.

This roundup highlights 10 custom-fit options for popular models, with a focus on materials, durability, and compatibility so you can shop with confidence.

Best 10 Custom Crossbow Replacement String Picks for 2026

BAT Custom Replacement String – Ballista BAT Custom String

If you need a custom crossbow replacement string for the BALLISTA BAT, this USA-made option is built as a dedicated spare or replacement part. The BCY X99 core and UHMWPE serving are aimed at improving stability and wear resistance, while the product notes also point to reduced creep and fuzz versus the standard string.

Best For: BALLISTA BAT owners who want a handmade USA replacement string with upgraded materials and a confirmed platform-specific fit.

Pros:

• Designed specifically for the BALLISTA BAT crossbow
• USA handmade with tight quality control
• BCY X99 core supports repeatable performance and reduced creep
• UHMWPE serving helps improve wear resistance in high-contact areas

Cons:

• Compatibility should be checked before installation
• Only one string is included
• Requires correct installation, inspection, waxing, and lubrication

This is a practical replacement choice if you want a backup string for routine maintenance on the BAT platform. Just follow the manual closely and avoid dry firing to help protect both the string and the crossbow.

Excalibur Assassin 420 String – 31 1/4 Inch Replacement String

For a custom crossbow replacement string sized to the Excalibur Assassin 420, this 31 1/4-inch option is built around BCY D97 material and a proprietary 5-stage stretching process. The notes also call out BCY 3D end serving and black braided crossbow serving, making it a straightforward replacement-focused buy.

Best For: Excalibur Assassin 420 owners who want a USA-made replacement string with a specified length and performance-oriented build process.

Pros:

• Built to a 31 1/4-inch length for the stated application
• Proprietary 5-stage stretching process
• BCY D97 material with BCY 3D end serving
• Made in the USA with a 30-day warranty

Cons:

• Compatibility is tied to the listed bow requirements
• Only the string is referenced in the notes
• Fit depends on proper bow-specific selection

This is a focused replacement pick when you want a string built for a specific Excalibur setup rather than a universal part. The stated length and materials make it easier to match the bow, but confirming compatibility remains important.

Ravin R18 String and Cable Set – Factory Maintenance Parts Set

If you’re shopping for a custom crossbow replacement string setup for the Ravin R18, this factory string-and-cable bundle is meant to restore peak bow velocity on that specific model. The notes stress that it is a complete set, but also that installation requires the official Ravin Bow Press and is best handled by a pro shop or the Ravin Service Department.

Best For: Ravin R18 owners who need the full string and cable set and are prepared to use the correct Ravin-only installation tools.

Pros:

• Specifically engineered for the R18 crossbow only
• Includes the main string and all cables needed for restoration
• Designed to support peak performance and velocity
• Factory maintenance part with clear replacement guidance

Cons:

• Will not fit other crossbow models
• Requires the official Ravin Bow Press
• Complex install is recommended for pro shop or service department handling

This is the right kind of replacement if you want a full, model-specific restore package rather than just a single string. The tradeoff is the stricter installation requirement, so it suits owners who can follow Ravin’s service rules exactly.

Excalibur Axioum String – 36 Inch Replacement String

This 36-inch custom crossbow replacement string is aimed at the Excalibur Axioum and follows the same construction notes as the other Excalibur option in this roundup. It uses BCY D97 material, a proprietary 5-stage stretching process, and BCY 3D end serving, making it a simple replacement choice for the listed bow.

Best For: Excalibur Axioum owners who need a 36-inch replacement string with a made-in-USA build and a bow-specific length.

Pros:

• 36-inch length for the listed Excalibur Axioum application
• BCY D97 material with proprietary 5-stage stretching
• BCY 3D end serving and black braided crossbow serving
• Made in the USA with a 30-day warranty

Cons:

• Compatibility depends on the bow requirements
• Single-string listing only
• Not presented as a universal fit

For Axioum owners, this is a clear replacement option when the main goal is matching the stated length and construction. As with any custom string, the safest buy is the one that matches your crossbow model exactly.

Horton Summit HD 150 – 33 3/4" Horton Summit HD 150 replacement string

If you need a custom crossbow replacement string for the Horton Summit HD 150, this 33 3/4-inch option is built around the bow’s stated requirements and uses BCY D97 material. It is aimed at a straightforward string-only replacement with USA-made construction and a black braided crossbow serving.

Best For: Horton Summit HD 150 owners who want a direct replacement string with BCY D97 material.

Pros:

• Made for the Horton Summit HD 150 model
• Uses BCY D97 material
• Includes a proprietary 5-stage stretching process
• Made in the USA with a 30-day warranty

Cons:

• String only, so it does not include other components
• Compatibility is specific to the listed bow requirements

This is a focused replacement choice if you want the right length and material specification for the Summit HD 150. The black serving and warranty add a practical finishing touch for a simple swap.

Bear Impact 33.75 – 33.75" replacement string for Bear Impact

This custom crossbow replacement string is sized at 33.75 inches for the Bear Impact 33.75 and is built with BCY D97 material. It follows a proprietary 5-stage stretching process and uses a black braided crossbow serving, making it a simple string-only replacement for the listed bow fit.

Best For: Bear Impact 33.75 owners looking for a made-in-USA replacement string with BCY D97 material.

Pros:

• Sized specifically at 33.75 inches for the Bear Impact 33.75
• BCY D97 material
• Proprietary 5-stage stretching process
• Made in the USA with a 30-day warranty

Cons:

• String only, not a full crossbow kit
• Color is limited to the listed green/tan style

For a Bear Impact 33.75, this is a practical replacement option that stays close to the bow’s stated fit and material requirements. The warranty and serving details make it a clean, straightforward choice for maintenance.

Excalibur Exocet – 35.4" replacement string for Excalibur Exocet

If you’re shopping for a custom crossbow replacement string for the Excalibur Exocet, this 35.4-inch option is built to the listed length and uses BCY D97 material. It also includes a proprietary 5-stage stretching process and comes as a string-only replacement with green/tan color styling.

Best For: Excalibur Exocet owners who want a replacement string in the listed 35.4-inch length.

Pros:

• Built to 35.4 inches for the Excalibur Exocet
• BCY D97 material
• Proprietary 5-stage stretching process
• Made in the USA with a 30-day warranty

Cons:

• String only, so no extra bow parts are included
• Fit is intended for the listed Excalibur Exocet requirement

This is a focused replacement for Exocet owners who need the stated length and material rather than a universal string. The combination of D97 construction, stretching process, and warranty makes it a sensible maintenance pick.

PSE Fang Fit – 37" BCY D97 Replacement String

If you need a custom crossbow replacement string for a PSE Fang setup, this 37-inch BCY D97 string is built around the bow’s requirements. It uses a proprietary 5-stage stretching process, BCY 3D end serving, and black braided crossbow serving, with Made in USA construction.

Best For: PSE Fang owners looking for a purpose-built 37-inch replacement string with BCY D97 material.

Pros:

• 37-inch length tailored to the PSE Fang
• BCY D97 material with black braided crossbow serving
• Proprietary 5-stage stretching process
• Made in USA

Cons:

• Only listed as a string, not a full set
• Fit is specific to the PSE Fang requirements

This is a focused replacement option for buyers who want the correct length and materials without extra components. The included serving and stretching process make it a practical choice for a straightforward string swap.

Bear Intense Match – Crossbow String & Cable Set for Bear Intense

For shoppers looking for a custom crossbow replacement string and cable setup for the Bear Intense, this matched set includes both lengths needed: 34.81 inches and 13.25 inches. It also features BCY D97 material, a proprietary 5-stage stretching process, BCY 3D end serving, and Made in USA construction.

Best For: Bear Intense owners who want a replacement string and cable set built to the listed specifications.

Pros:

• Includes both string and cable lengths: 34.81″ and 13.25″
• BCY D97 material with black/tan finish
• Proprietary 5-stage stretching process
• 30-day warranty and Made in USA

Cons:

• Designed specifically for the Bear Intense
• Requires checking compatibility with your exact model

This set is a strong fit when you need both parts replaced together and want materials that match the bow’s requirements. The warranty adds a bit of extra peace of mind for a model-specific purchase.

Fortus Match – Bear Fortus Custom Bow String & Cable

If you’re shopping for a custom crossbow replacement string for the Bear Fortus, this string and cable set is listed with lengths of 37.2 inches and 23.4 inches. It uses BCY D97 material, a proprietary 5-stage stretching process, BCY 3D end serving, black braided crossbow serving, and Made in USA construction.

Best For: Bear Fortus owners needing a matched string-and-cable replacement set.

Pros:

• Matched set for the Bear Fortus
• Listed lengths: 37.2″ and 23.4″
• BCY D97 material with black braided crossbow serving
• Proprietary 5-stage stretching process

Cons:

• Model-specific fit limits broader use
• No warranty details listed in the supplied notes

This is a straightforward replacement set for Bear Fortus owners who want the stated lengths and materials in one package. The focus on bow requirements and serving details makes it a practical option for a like-for-like swap.

How We Picked the Best Custom Crossbow Replacement String

We focused on model-specific fit, material quality, serving durability, and the likelihood of restoring consistent performance. For a Custom Crossbow Replacement String, exact length and the correct brace-height or cable-set match matter just as much as brand reputation.

We also prioritized options built with proven fibers such as BCY D97, BCY X99, and UHMWPE-based constructions, since these materials are commonly chosen for strength, low creep, and wear resistance.

Quick Comparison

Some buyers need a direct string-only replacement for a specific bow, while others need a full string-and-cable set to properly retune the crossbow. Excalibur, Ravin, Bear, Horton, and PSE owners should double-check whether their model requires a standalone string or a matched bundle.

In general, string-only options are simpler and often more affordable, while string-and-cable sets are the safer choice when you want complete synchronization and easier restoration of factory performance.

Key Buying Factors for a Custom Crossbow Replacement String

Exact Fit and Model Compatibility

Start with your exact crossbow model and any listed limb or axle requirements. Even a small mismatch in length can affect tuning, center serving wear, and shot consistency.

Material and Stretch Resistance

Look for low-stretch fibers and consistent construction. Lower creep helps maintain tune longer, which is especially important on higher-speed bows.

Serving Quality

Serving protects the string where it contacts the rail, cams, and flight deck. A tighter, more durable serving can improve longevity and reduce fraying in high-contact areas.

String-Only Versus Set

If your crossbow uses matched cables, replacing only the string may not fully solve speed or timing issues. A complete set is often the better value when components are worn together.

Install and Tuning Needs

Some replacements are simple swaps, while others require a bow press, specific measurements, or a pro shop install. Confirm the installation path before buying.

Who Should Buy Which Custom Crossbow Replacement String?

Buy a model-specific Custom Crossbow Replacement String if you want a direct fit for a known bow and prefer a straightforward replacement. Choose a string-and-cable set if your system depends on matched components or if you are refreshing an older setup.

Excalibur owners should verify their exact model length carefully, while Ravin, Bear, Horton, and PSE users should pay extra attention to whether the listing is for the right platform and whether it includes the full bundle needed for peak performance. If you want the best balance of fit, durability, and easy decision-making, match the product type to your bow’s factory requirements first, then compare materials and serving quality second.