ROSS 90003 Flat Top Forged Pistons Imca Ump Wissota 4.030

( Brand: Ross ), ( Manufacturer Part Number: 90003 ), ( Part Type: Piston ), ( Fitment Type: Performance/custom )

Review ROSS 4.030 Bore Flat Top Forged Pistons Chevy Imca Ump Wissota fits SB

Ross 90003 4.030 Flat Top Forged Pistons - SB Chevy, IMCA, Wissota Compatible

The Ross 90003 4.030 Flat Top Forged Pistons are a testament to performance and durability, specifically designed for SB Chevy, IMCA, and Wissota racing applications. These high-quality pistons are meticulously crafted through a forging process, ensuring a robust and reliable structure that stands up to the rigors of competitive racing.

Each piston features a 4.030-inch bore diameter, making them suitable for a wide range of engine sizes. The flat top design provides excellent combustion efficiency, ensuring optimal power output and consistent performance. The piston skirts are designed to minimize friction, reducing wear and improving overall engine efficiency.

The Ross 90003 pistons are made from a high-temperature, heat-treated alloy, ensuring they can withstand the extreme conditions encountered during racing. The pistons are also equipped with a durable wrist pin and ring package, including a low-tension, chrome-moly ring that helps prevent ring groove distortion and ensures long-lasting performance.

These pistons are designed to fit perfectly into your SB Chevy, IMCA, or Wissota engine, ensuring a seamless installation process. With their combination of strength, efficiency, and compatibility, the Ross 90003 4.030 Flat Top Forged Pistons are an excellent choice for any serious racer looking to gain an edge on the competition. Upgrade your engine today with these high-performance pistons from Ross.

1. High-quality forged pistons: Forged pistons are stronger and more durable compared to cast pistons, ensuring a longer lifespan and better performance.

2. SB Chevy design: This design is suitable for small-block Chevy engines, which are popular and widely used in racing applications.

3. IMCA and UMP approved: These pistons are approved for use in IMCA (International Motor Contest Association) and UMP (United Midwestern Promoters) racing series, ensuring they meet the necessary standards for competition.

4. Wissota approved: Wissota is a sanctioning body for short-track racing in the Midwest, and these pistons are approved for use in their events.

1. Specific application: These pistons are designed for SB Chevy engines, which may limit their versatility for other engine types.

2. Higher cost: Forged pistons generally cost more than cast pistons due to their manufacturing process and materials.

3. Require precise installation: Proper installation and setup are crucial to ensure optimal performance and to avoid damage to the engine.

In conclusion, the Ross 90003 4.030 Flat Top Forged Pistons for SB Chevy IMCA UMP Wissota are a high-quality option for racing applications where these specifications are required. While they may be more expensive than other options and have limited versatility, their durability, strength, and approval for use in major racing series make them a worthwhile investment for those in need of such pistons. If you have a small-block Chevy engine and compete in IMCA, UMP, or Wissota racing series, these pistons are a recommended choice.

Details:

Here is 5 ONLY used ROSS forged flat top pistons for the Sb Chevy engines. Part number 90003. They are for the 6 connecting rod and 3.480 stroke crank shaft. They are 4.030 bore, 1.245 compression height and have all 8.927 wrist pins included.

part #: 90003 prices

• $40.00-$100.00

specifications pistonringro:

• for models: Sb
• for makes: Chevy
• brand: Ross
• mpn: 90003
• part type: Piston
• fitment type: Performance/custom

returns pistonringro:

• policy: No Returns

general pistonringro:

• Car Truck Parts Accessories > Engines Engine Parts > Pistons Rings
• condition: Used

seller pistonringro:

• city: Monmouth, Illinois
• # reviews: 9769
• rating: 99.4%

offer pistonringro:

• quantity: 1
• started: March 17, 2025
• sold: 0
• availability: In Stock
• options: Ship-to-home

payments pistonringro:

• wallet: Paypal
• other
• money order
• credit card: Visa

shipping pistonringro:

• transit: 3-8 Days
• service: USPS Ground Advantage
• class: Standard
• cost: $26.40
• type: Calculated
• carrier: USPS

Ross 90003 Is Similar To:

• 119328 Ross Racing Pistons Series Bb Vb (34.5% similar) Look at pictures. Box has shelf ware and is opened...(October 16th, 2018)
• 29-22 Ross Hemi Race Pistons Set Of (39.6% similar) Brand new 16 rings. Set of for hem dome race pistons with pins 426HBORE included 375STROKE 500ROD length...(December 18th, 2018)
• 30-201 Ross New Pistons Ford Dome Piston Set Bore Check Out (35.4% similar) ...(September 29th, 2018)
• 48621 Ross Pistons 4.0003 911 (28% similar) Offer is for pistons only as shown nothing else bore. Cost was just over 400 in 1999 , have receipt. Please research numbers see pictures. 911 Porsche Ross racing forged piston nos I was told these are for 911 but am not sure...(February 2nd, 2018)
• 6760c3d-1 Eagle Specialty Products Connecting Rods And Ross Pistons For (19.7% similar) There is no damage that I can see on the rods or pistons am selling in this offer. 6 eagle rods and Ross pistons for a 440 Chrysler sale rods: with matching bushed caps. The other two are gone and these all that remain. Parts ros overview make Chrysler I will not separate or sell individually. You ...(November 4th, 2018)
• 82008 Ross Forged Piston For (40.4% similar) Single Ross forged piston bore in. Piston rings included: no. Piston ring thickness: 1/1 6 in. Wrist pin style: floating included: yes diameter in: 490MM piston style: flat top, with two valve reliefs material: forged aluminum compression distance in: bream: in...(December 20th, 2017)
• 90021 Ross Sbc Forged Dome Pistons Part Number Please Read (37.2% similar) 1 can see pictures for a better item condition and. 8ROD: 6DISH dome: 13PIN: rings: 1/1 6, 3/1 6 comp height . Buyers please pay within 48HRS...(February 18th, 2019)
• 90451l Ross Pistons Forged Dome Bore Chevy Each 803050235121 (33.6% similar) Bore in pin diameter in. Fitment information may not be available for all products and those without will have a compatibility link. 20CC piston material forged aluminum ring thickness 1/1 6 in. Actual item may vary. Gram weight 538G. Buyer pays return shipping. Notes left cylinder bank. Piston ...(October 22nd, 2018)
• 90460 Ross Racing Pistons (31.3% similar) 030 bore stroke, rod length , comp height 3/1 6 full set of 8 with wrist pins dish piston looks to be low compression 2 valve reliefs. 350 chevy flat top PISTON,4...(October 17th, 2018)
• 99473 Ross Pistons Piston Forged Flat Bore Chevy Set Of (33.3% similar) Pin diameter in. Fitment information may not be available for all products and those without will have a compatibility link. Notes oil rail support included. Bream buyer pays return shipping. 537MM compression distance in...(September 16th, 2018)
• 99906 Ross Pistons Racing Forged Piston (38.2% similar) Piston material forged aluminum ring thickness 1/1 6 in. Buyer pays return shipping. Actual item may vary. Bream piston rings included no flat top, with two valve reliefs quantity sold as a set of x 1/1 6 in. Pin diameter in. Fitment information may not be available for all products and those ...(July 4th, 2018)