ProTaper PT520 Pro Series Chain
MSRP: $109.99
$87.99
Exact Fitment Guarantee
The ProTaper PT520 Pro Series Chain is a high-performance, non-sealed competition racing chain engineered to replace stock drive chains with a high-strength, low-friction driveline link. Designed specifically for modern motocross, supercross, and arena racing, the PT520 is constructed to withstand the brutal instantaneous torque spikes of modern fuel-injected four-strokes while minimizing frictional drag and rotational inertia.
Manufactured in Japan to rigid aerospace tolerances, the PT520 utilizes premium high-carbon alloy steel link plates that are shot-peened and heat-treated to resist stretching and fatigue failure under extreme competition loads. The chain features solid bushings and solid rollers that resist impact deformation from rocks and hard jump landings. With an outstanding tensile strength rating exceeding 8,400 lbs, the PT520 provides reliable power delivery without stretching out after every moto. The gold-plated side plates provide a durable barrier against rust and chemical corrosion while elevating the bike's aesthetic appeal.
- Chain Pitch: 520 Pitch (Standard 5/8" x 1/4" dimensions)
- Construction: Premium non-sealed Japanese competition racing chain
- Tensile Strength: 8,400+ lbs rating for maximum shock load resistance
- Bushing / Roller Type: Cold-formed solid bushings and solid seamless rollers
- Plating: Gold-plated outer link plates with natural shot-peened inner links
- Link Count Options: Standard 120 links (trimmable to exact wheelbase specification)
### Step-by-Step Installation & Safety Protocols Installation is straightforward using standard 520 chain tools. Cut the chain to the correct link count for your gearing setup. Thread the chain through the driveline components, wrap the ends around the rear sprocket, and insert the supplied clip-type master link. Press the outer side plate into position and clip the spring retainer into place with the closed loop facing forward in the direction of chain rotation. Set rear axle block alignment marks evenly on both sides of the swingarm to ensure perfect sprocket alignment, set chain slack to 50-55mm, and torque the axle nut to manufacturer specs.
### Maintenance & Care Routine Maintenance consists of routine post-wash cleaning with a non-acidic chain cleaner, blow-drying thoroughly, and applying a high-grade synthetic chain lube before every moto to prevent friction and heat buildup.
Frequently Asked Questions
Q: Is the ProTaper PT520 chain pre-stretched at the factory?
A: Yes. ProTaper pre-stresses and pre-stretches the PT520 chain during the manufacturing process, which drastically reduces initial chain stretch and minimizes the need for constant adjustment during the first few rides.
Q: Does this chain include a master link?
A: Yes, every ProTaper PT520 Pro Series Chain comes packaged with a matching gold clip-type master link.
Q: What is the advantage of solid rollers over split rollers?
A: Solid rollers are seamless cylinders cold-formed from high-tensile steel, preventing roller cracking, flattening, and catastrophic failure under heavy shock loads compared to cheaper split-rolled rollers.
Q: Can the PT520 chain handle modern 450cc four-stroke torque?
A: Yes, the 8,400 lb tensile strength rating is specifically calibrated to handle the aggressive torque pulses of 450cc four-stroke competition engines.
Q: How do I adjust chain slack correctly?
A: Place the motorcycle on a center stand so the rear wheel hangs freely, find the tightest spot in the chain by rotating the wheel, and measure slack at the middle of the swingarm slider.