Drivetrain Clutches and Components

JB Racing

Lightweight Flywheel

$581.00

SKU: 520-110-215

In Stock
In Stock
Ships by Aug 4
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The JB Racing 520-110-215 is an aluminum lightweight flywheel specifically engineered to enhance performance in street-driven BMWs equipped with M10 engines. It offers a substantial reduction in the high rotational mass found in stock flywheels, enabling your engine to achieve higher RPMs more rapidly. This direct benefit translates into quicker gear shifts and a more manageable rev-matching process during downshifts. Crafted from billet aluminum in a single-mass configuration, this flywheel meticulously replicates the critical dimensions of the original OEM component, ensuring compatibility with factory clutch setups. JB Racing utilizes advanced CNC machining for precise manufacturing, with each unit designed, machined, assembled, balanced, inspected, and packaged in-house. The company is known for its high standards, catering to professional race teams with their driveline components. Key features of this flywheel include CNC machining with zero-balance for smooth operation, a replaceable hardened steel clutch surface, and Heli-coil inserts in pressure plate mounting holes to prevent stripping. It also incorporates a factory-specification starter ring gear, a hardened steel gall plate for protection, and captive 10mm dowel pins for security. The package includes necessary hardware: flywheel bolts, pressure plate bolts, and dowel pins. Weighing only 8 pounds, it's a significant upgrade from the stock 14-pound flywheel. This JB Racing flywheel is compatible with a range of BMW models including the 2 Series 2002 (74-76) M10, 2002ti (74-76) M10; 3 Series E21 320i (77-83) M10, E30 316 (82-88) M10, E30 318i (82-87) M10; and 5 Series E28 518 (80-84) M10, E28 518i (81-Aug 85) M10. The clutch size is 215mm.

MIA's Description

The JB Racing 520-110-215 is an aluminum lightweight flywheel designed for BMW M10 engines. It significantly reduces the rotational mass of the stock flywheel, allowing the engine to rev faster, leading to quicker shifts and easier rev-matching.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandJB Racing
Part Number520-110-215
CategoryDrivetrain

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy