Collection: THEORY
Theory Parts is a sub-brand founded by the New Jersey brand Merritt in the United States. Its product positioning focuses more on entry-level economical options and parts and peripheral products that can be used with other non-20-inch BMX models! Provide stores with more diverse choices and suitable for various types of BMX bicycles!
Theory Parts is an American BMX parts brand from the brother brand Merritt BMX , the product focuses more on affordable parts that suits not only for 20" BMX bikes. Offering wider options for bike shops to serve the need of all kinds of bike life riding.
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THEORY - ALUMINUM PIVOTAL SEAT POST 300MM
Regular price $950.00 TWDRegular priceUnit price / perSale price $950.00 TWDSold out -
THEORY - HUB CONE WRENCH 21MM / 24MM
Regular price $250.00 TWDRegular priceUnit price / perSale price $250.00 TWD -
THEORY - 3/8" (10MM) HUB AXLE NUT
Regular price $450.00 TWDRegular priceUnit price / perSale price $450.00 TWD -
THEORY - SPROCKET ADAPTER
Regular price $120.00 TWDRegular priceUnit price / perSale price $120.00 TWD -
THEORY - M24 FORK TOP CAP
Regular price $400.00 TWDRegular priceUnit price / perSale price $400.00 TWD -
THEORY - CONSERVE CRANKS
Regular price From $2,200.00 TWDRegular priceUnit price / perSale price From $2,200.00 TWD -
THEORY - 1-1/8" HEADSET SPACERS
Regular price From $150.00 TWDRegular priceUnit price / perSale price From $150.00 TWD -
THEORY - SEAT CLAMP 28.6MM
Regular price $300.00 TWDRegular priceUnit price / perSale price $300.00 TWD -
THEORY - RIM TAPE 30MM 18"/20"/24"
Regular price $150.00 TWDRegular priceUnit price / perSale price $150.00 TWD -
THEORY - QUICK RELEASE SEAT CLAMP 28.6MM
Regular price $400.00 TWDRegular priceUnit price / perSale price $400.00 TWD -
Sold outTHEORY - PREDICT REAR WHEEL 20"
Regular price $3,500.00 TWDRegular priceUnit price / perSale price $3,500.00 TWDSold out -
Sold outTHEORY - PREDICT FRONT WHEEL 20"
Regular price $2,500.00 TWDRegular priceUnit price / perSale price $2,500.00 TWDSold out -
THEORY - MONTANA 2PC BARS 24" - 29" FIXIE / CRUISER
Regular price $2,700.00 TWDRegular priceUnit price / perSale price $2,700.00 TWD -
THEORY - MID BB SET
Regular price $800.00 TWDRegular priceUnit price / perSale price $800.00 TWD -
THEORY - CRANK PINCH BOLTS
Regular price $180.00 TWDRegular priceUnit price / perSale price $180.00 TWD -
THEORY - BOND TOP LOAD STEM
Regular price $1,000.00 TWDRegular priceUnit price / perSale price $1,000.00 TWD -
THEORY - AMERICAN BB SET
Regular price $1,100.00 TWDRegular priceUnit price / perSale price $1,100.00 TWD -
THEORY - AMERICAN BB CUP
Regular price $450.00 TWDRegular priceUnit price / perSale price $450.00 TWD -
THEORY - 8 SPLINE CRANK SPINDLE 19MM X138MM
Regular price $520.00 TWDRegular priceUnit price / perSale price $520.00 TWD -
THEORY - 8 SPLINE CRANK BOLTS
Regular price $180.00 TWDRegular priceUnit price / perSale price $180.00 TWD -
THEORY - 14MM HUB AXLE NUT
Regular price $450.00 TWDRegular priceUnit price / perSale price $450.00 TWD -
THEORY - 1-1/8" THREADLESS HEADSET
Regular price $720.00 TWDRegular priceUnit price / perSale price $720.00 TWD -
THEORY - 1-1/8 CONVENTION HEADSET
Regular price $850.00 TWDRegular priceUnit price / perSale price $850.00 TWD -
Sold outTHEORY - "PROVEN" TIRES 2.4"
Regular price $600.00 TWDRegular priceUnit price / perSale price $600.00 TWDSold out
















