BMW Internal Engine Parts for BMW X Series F26 (2015+)

Supertech Single Groove Exhaust Valve - Priced Each

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T#:21472889

Part#: BMEVI-1055S-HS

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$ 55.99 USD

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Single Groove sodium filled exhaust valves for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm

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5mm Single Groove Valve Keeper - Set Of 24

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T#:21604314

Part#: KPR-5.0-7S-24

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$ 72.99 USD

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Two required per valve, for use with certain supertech valves 5.0mm single groove

BMW N55 S55 37cc Platinum Series Dish Piston Set - 84.5mm Bore ...

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T#:17073607

Part#: 647005C-6

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8% off MSRP $ 1,208.99

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$ 1,111.99 USD

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$ 1,208.99

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$ 1,111.99 USD

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BMW N55 S55 37cc Platinum Series Dish Piston Set - 84.5mm Bore is designed for high-performance applications, providing exceptional strength and durability for BMW engines. Turner Motorsport offers this premium piston set to enhance engine reliability and efficiency.

High-Strength Material: Crafted from 2618 high-strength material for superior durability and performance.
Quiet Start-Ups: Offset wrist pin design minimizes noise during engine start-ups.
Premium Pins: Includes a .210” wall Premium Chrome Moly pin (Standard Series) or a .210” wall 9310 alloy pin (Extreme Duty Series) for added strength.
Pressure Balance Groove: Features a pressure balance groove to improve piston stability and efficiency.
Valve Accommodation: Designed to accommodate +1mm valve sizes for enhanced engine performance.
Top-Quality Rings: Comes with premium steel top rings, Napier seconds, and round wire locks for optimal sealing and reliability.
Recommended Clearance: Piston clearance of .0035” measured .850” from the bottom of the oil ring for precise fitment.

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N55/S55 Manley 37cc Platinum Series Dish Piston Set

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T#:17073609

Part#: 647000C-6

In Stock at Vendor

8% off MSRP $ 1,208.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,111.99 USD

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8% off MSRP

$ 1,208.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,111.99 USD

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Upgrade the performance of your BMW N55/S55 3.0L engine with the Turner Motorsport Manley 37cc Platinum Series Dish Piston Set. Crafted from high-strength 2618 material, these pistons offer exceptional durability and reliability. The offset wrist pin design ensures quiet start-ups, while the inclusion of both Premium Chrome Moly and 9310 alloy .210” wall pins caters to varying needs. The pressure balance groove, compatibility with +1mm valve sizes, and premium steel top rings with Napier seconds and round wire locks make these pistons a top-notch choice. With a recommended piston clearance of .0035”, measured .850” from the bottom of the oil ring, these pistons guarantee optimal performance for your BMW engine.

Manley 37cc Platinum Series Dish Piston Set for BMW N55/S55 3.0L engine.
High-strength 2618 material for exceptional durability.
Offset wrist pin for quiet start-ups.
Includes both Premium Chrome Moly and 9310 alloy .210” wall pins.
Pressure balance groove for enhanced performance.
Accommodates +1mm valve sizes for customization.
Premium steel top rings with Napier seconds and round wire locks included.
Recommended piston clearance of .0035” ensures optimal engine function.

Enhance your BMW's engine with the Turner Motorsport Manley 37cc Platinum Series Dish Piston Set, delivering reliability and performance.

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Supertech Forged Pistons - Set Of 6

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T#:21604329

Part#: P6-BMN55-84-T-6

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$ 984.99

This product was last offered at the strikethrough price on
05-21-2026

$ 904.99 USD

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$ 984.99

This product was last offered at the strikethrough price on
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Supertech forged pistons are a great choice for performance engine builds! Bore: 84.00mm Over Size: STD Comp Ratio: 10.2:1 Dome dish: -10.4 Head CCs: 37cc Comp Height: 32.40mm Stroke: 89.60mm Skirt style: Slipper Design Rod Length: 141.35mm Pin Diam: 22mm Material: 4032 Application: All Motor / Turbo Ring part number: R84-GNH8400 (MUST BE PURCHASED SEPARATELY)

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N55/S55 37cc Platinum Series Dish Extreme Duty Piston Set - 84.5mm Bo...

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T#:17073606

Part#: 647005CE-6

In Stock

7% off MSRP $ 1,309.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,222.99 USD

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7% off MSRP

$ 1,309.99

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$ 1,222.99 USD

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Supertech Single Groove Intake Valve - Set Of 12

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T#:14783498

Part#: BMIVN-1055S-12

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$ 310.99 USD

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$ 310.99 USD

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Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm

Supertech Titanium Valve Retainers - Intake - Set Of 12

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T#:21604322

Part#: RET-BMN54-TI-12

Ships in 6 Business Days

$ 197.99 USD

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$ 197.99 USD

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7 Degree - 5mm valve stem - Single or Tripe Groove Valves

Supertech Titanium Valve Retainers - Exhaust - Set Of 12

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T#:21604321

Part#: RET-BMN54-TE-12

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$ 197.99 USD

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7 Degree - 6mm valve stem - Single or Tripe Groove Valves

Performance Dual Valve Spring Kit with Steel Retainers - Set Of 24 ...

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T#:21604308

Part#: SPRKFE20N54BE

Ships in 4 Business Days

$ 965.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Can be used with factory valve stem seals and keepers. InnSpr.OD: 21mm InnSpr.ID: 14.2mm Seat Pressure: 75 @ 36.5 Open Pressure: 155 @ 10 Max Lift: 12mm Coil Bind: 23.2mm Rate: 8 Kit spring: SPR-FE20BE Kit spring qty: 24 Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm) OutSpr.OD: 24.4mm OutSpr.ID: 17.6mm Retainer qty: 24

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Supertech Single Groove Exhaust Valve - Set Of 12

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T#:14816646

Part#: BMEVI-1055S-HS-1

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$ 660.99 USD

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$ 660.99 USD

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Single Groove sodium filled exhaust valve set for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm

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Conical Spring Kit - Set Of 24

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T#:21604309

Part#: SPRKFE20N54BE2

Ships on Jul 27, 2026

$ 965.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Can be used with factory valve stem seals and keepers. InnSpr.OD: 21mm InnSpr.ID: 14.2mm Seat Pressure: 88 @ 36.5 Open Pressure: 160 @ 10 Max Lift: 12mm Coil Bind: 23.2mm Rate: 7.25 Kit spring: SPR-FE20BE-2 Kit spring qty: 24 Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm) OutSpr.OD: 24.4mm OutSpr.ID: 17.6mm Retainer qty: 24

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Forged Connecting Rods - Sold Each

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T#:21604327

Part#: CR-BMN55-H144.35

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$ 198.99

This product was last offered at the strikethrough price on
05-03-2026

$ 184.99 USD

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$ 198.99

This product was last offered at the strikethrough price on
05-03-2026

$ 184.99 USD

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Supertech forged rods are a great choice for performance engine builds! These rods come with ARP 2000 hardware and are designed for high powered N55/S55 applications. H-Beam design Forged 4340 alloy Center to center: 144.35mm Be bore: 53.6mm Be width: 20.88 Pe bore: 22mm full float Pe width: 20.88mm tapered ARP 2000 - 3/8" x 1.600" bolts

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Performance Conical Valve Spring - Sold Each

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T#:21472894

Part#: SPR-FE20BE

In Stock

$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 18.99 USD

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$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 18.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm

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Supertech Titanium Valve Retainers - Exhaust - Sold Each

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T#:21604320

Part#: RET-BMN54-TE

Ships in 8 Business Days

$ 16.99 USD

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$ 16.99 USD

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7 Degree - 6mm valve stem - Single or Tripe Groove Valves

Performance Conical Valve Spring - Set Of 24

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T#:21604325

Part#: SPR-FE20BE-2-24

Ships in 8 Business Days

$ 494.99 USD

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$ 494.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 84 @ 37 Open Pressure: 157 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm Rate: 7.25

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Supertech Titanium Valve Retainers - Intake - Sold Each

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T#:21604319

Part#: RET-BMN54-TI

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$ 16.99 USD

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$ 16.99 USD

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7 Degree - 5mm valve stem - Single or Tripe Groove Valves

Performance Conical Valve Spring - Set Of 24

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T#:21604324

Part#: SPR-FE20BE-24

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$ 471.99 USD

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$ 471.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm

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Performance Conical Valve Spring - Sold Each

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T#:21604306

Part#: SPR-FE20BE-2

Ships in 8 Business Days

$ 20.99 USD

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$ 20.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 84 @ 37 Open Pressure: 157 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm Rate: 7.25

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