Moose Racing 1711-0991 2005-2025 Beta RR X-Pro Xtrainer Rear Disc Guard — Integrated Brake Carrier

Moose Racing — Ultimate Impact Protection and Billet Durability for Beta Off-Road Motorcycles

The most common cause of rear brake failure on the trail is a bent rotor or smashed caliper caused by hidden rocks and deep ruts. Standard plastic guards or thin bolt-on protectors suffer from a "durability gap," shifting under heavy impacts and allowing debris to compromise your braking system. The Moose Racing 1711-0991 Pro Shark Fin Disc Protector solves this vulnerability pain point for Beta riders by replacing the entire stock rear brake caliper carrier with a single piece of high-strength structural armor that won't flex, bend, or snap under pressure.

This isn't just an accessory; it is a serious heavy-duty chassis upgrade engineered for perfect System Synergy with your Beta's rear axle assembly. CNC-machined from premium aluminum alloy, this integrated guard offers massive coverage for both the lower rotor disc and the vulnerable brake caliper body. By anchoring directly to the axle line, it ensures Matched Performance stability, allowing your bike to glide over hard trail obstacles while keeping your hydraulic braking components operating safely at Factory Quality standards.

• 1711-0991 (Pro Shark Fin Guard): A premium, silver-anodized billet aluminum rear armor unit designed to replace the stock caliper bracket for maximum structural integrity.

• Full Carrier Replacement: Eliminates weak bolt-on mounting tabs by integrating the guard directly into a new, heavy-duty brake carrier bracket.
• Billet Aluminum Strength: Machined from a high-grade alloy block to deliver unyielding protection against jagged rocks, logs, and stumps.
• Comprehensive Coverage: Extended shield profiles wrap around both the lower rotor edge and the vital caliper pistons.
• Replaceable Lower Fin: Features a modular design where the high-impact lower fin can be easily swapped out if damaged over years of hard racing.
• Made in the USA: Proudly manufactured with precise engineering tolerances to guarantee an exact fit and effortless installation on your swingarm.

Moto-House MX Pro Tip:

When installing your new Pro Shark Fin guard, take the time to inspect your rear axle and wheel bearings. Clean the axle thoroughly and apply a thin layer of high-temp waterproof grease before sliding it back through the new carrier bracket. This prevents galling, blocks out fine trail dust, and ensures smooth wheel alignment during chain adjustments, matching the precision expected from top factory race mechanics.

Year	Make	Model
2025	Beta	125 / 200 / 250 / 300 / 350 / 390 / 430 / 480 RR X-Pro
2015 - 2025	Beta	300 Xtrainer
2022 - 2024	Beta	Xtrainer
2005 - 2024	Beta	250 RR / 300 RR (2-Stroke Models)
2005 - 2024	Beta	350 RR / 390 RR / 430 RR / 480 RR (4-Stroke Models)
2015 - 2024	Beta	125 / 200 / 250 / 300 / 350 / 390 / 430 / 480 RR Race Edition
2017 - 2023	Beta	350 RR-S / 390 RR-S / 430 RR-S / 500 RR-S
2021	Beta	300 RX

FAQ Questions

Q) Does this shark fin bolt onto my existing rear brake bracket?
A) No. The Pro Shark Fin features an integrated design that completely replaces your stock rear brake caliper carrier bracket, offering unmatched rigidity and structural armor.

Q) What happens if I smash the lower part of the guard on a rock?
A) The lower fin section is completely modular and replaceable. If you manage to dent or scrape it heavily after seasons of hard off-road riding, you can swap out just the lower fin without purchasing a whole new kit.

Q) Will this fit the newer 2025 Beta X-Pro models?
A) Yes, this guard is designed to fit the updated 2025 Beta RR X-Pro lineup as well as older RR, Race Edition, and Xtrainer models specified in our fitment table.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best motocross shop in Central Florida with lightning-fast shipping.