There are 60° of permanently engraved timing marks, Has a 6.10\" outside diameter and is internally balanced, Dampers weigh 5.40 pounds, and are very safe with an 18.1 SFI rating, It is spin tested to 12,500 RPM and has a retained outer inertia ring, This harmonic dampened is f fully machined from high quality carbon steel Pro Race 31262 Pro/Sport 6.1 Inch SBC Harmonic Balancer Int Balanced Sku # 91041262 Mfr. Part # 31262 Condition New Brand Pro Race Sold Each Details
These Pro/Sport Small Block Chevy harmonic dampers by Pro Race Performance Products are fully machined from high quality carbon steel. Dampers weigh 5.40 pounds, and are very safe with an 18.1 SFI rating. These Dampers feature an amazing overall surface finish. Internally balanced. Sold each.
- Pro/Sport 31262 Harmonic Balancer
- 6.10\" outside diameter
- 5.40 pounds
- Internally balanced
- Spin tested to 12,500 RPM
- Retained outer intertia ring
- Pressure bonded elastomer
- Accurately balanced
- Removable counterweights on externally balanced
models - 60° of permanently engraved timing marks
- SFI 18.1 rated
- For 283-350 Small Block SFI Spec. #18.1
- Spin tested to 12,500 rpm
- Fully machined from high quality carbon steel
- Retained outer inertia ring
- 60o of permanently engraved timing marks (40o on SB Ford models)
- Pressure bonded elastomer • Accurately balanced
- Removable counterweights on externally balanced models
The Pro/Sport Damper
Specialist Harmonic Damper manufacturer, PRO/RACE Performance Products, manufactures the PRO/SPORT line of SFI dampers! Harmonic Dampers play a vital role to ensure longevity of engines and crankshafts, and are arguably the most important external component of an engine. Harmonic Dampers protect against harmful engine harmonic vibrations that can lead to valvetrain damage, rapid bearing and timing chain wear or ultimately crankshaft breakage. Why trust dampers from any other manufacturer, when PRO/SPORT Harmonic Dampers are engineered with more than 25 years of SFI damper manufacturing experience.
The PRO/SPORT range of Harmonic Dampers provides race quality performance dampers at near replacement part prices and are available for most popular V8 engines. Designed as a direct replacement of the OEM damper, the PRO/SPORT Harmonic Damper has many features which exceed OEM requirements! Manufactured to the quality standards you have come to expect from a specialist Damper manufacturer, the PRO/SPORT SFI Harmonic Dampers are produced from quality carbon steel, with mechanical properties exceeding the stringent SFI Spec. #18.1 requirements! Spin tested to 12,500 rpm for one hour to comply with SFI Spec. #18.1, so when your racing needs
require SFI certification, the PRO/SPORT Harmonic Damper is ready for the track.
Machined to exacting tolerances and assembled using pressure bonded elastomer technology of tried and proven design for optimum damping performance! The outer inertia ring is retained by a robust retention plate secured by 6 high tensile bolts to ensure maximum safety of the product. Extremely accurate and easy to read permanently engraved timing marks make engine timing easy, and 90o marks simplify valve timing operations (except SB Ford models).
The Pro/Sport Damper
Specialist Harmonic Damper manufacturer, PRO/RACE Performance Products, manufactures the PRO/SPORT line of SFI dampers! Harmonic Dampers play a vital role to ensure longevity of engines and crankshafts, and are arguably the most important external component of an engine. Harmonic Dampers protect against harmful engine harmonic vibrations that can lead to valvetrain damage, rapid bearing and timing chain wear or ultimately crankshaft breakage. Why trust dampers from any other manufacturer, when PRO/SPORT Harmonic Dampers are engineered with more than 25 years of SFI damper manufacturing experience.
The PRO/SPORT range of Harmonic Dampers provides race quality performance dampers at near replacement part prices and are available for most popular V8 engines. Designed as a direct replacement of the OEM damper, the PRO/SPORT Harmonic Damper has many features which exceed OEM requirements! Manufactured to the quality standards you have come to expect from a specialist Damper manufacturer, the PRO/SPORT SFI Harmonic Dampers are produced from quality carbon steel, with mechanical properties exceeding the stringent SFI Spec. #18.1 requirements! Spin tested to 12,500 rpm for one hour to comply with SFI Spec. #18.1, so when your racing needs
require SFI certification, the PRO/SPORT Harmonic Damper is ready for the track.
Machined to exacting tolerances and assembled using pressure bonded elastomer technology of tried and proven design for optimum damping performance! The outer inertia ring is retained by a robust retention plate secured by 6 high tensile bolts to ensure maximum safety of the product. Extremely accurate and easy to read permanently engraved timing marks make engine timing easy, and 90o marks simplify valve timing operations (except SB Ford models).
Specs MFG. Part # 31262 Outside Diameter 6.1" Thickness 1.52" SFI Rating 18.1 Weight 5.4 lbs. Engine Balance Internal Degree Markings Yes Reviews lighter than others Rated by Chris on March 15, 2025
Summary: going to be a great addition to my race motor than i'm putting together
Yes, I recommend this product.
Yes I would and did purchase this again. Rated by Bob on January 14, 2023
Summary: Make sure you invest in an adjustable timing pointer, Locktite front weight retainer and bolts.
Yes, I recommend this product.
Yes I would and did purchase this again. Rated by Bob on December 25, 2022
Summary: The outer retaining (front) started moving not sure if the bolts came loose or the ring just beat itself loose but it tore its up..Red locktite or some retaining compound should fix the problem on #2.
Yes, I recommend this product.
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