Trucks and Deck Compatibility: A Buyer-Friendly Guide

A fingerboard truck has six main parts. Understanding each part helps buyers read listings and helps sellers describe their hardware accurately.^1, 2, 3

• 01Baseplate

  the flat metal plate that mounts to the deck's underside via four screws. It holds the kingpin and the pivot cup.

• 02Hanger

  the T-shaped metal bar that carries the axle. Hanger width is the measurement most brands use to describe truck size.

• 03Axle

  the metal rod running through the hanger. Wheels seat on the axle ends. Axle length is slightly longer than hanger width.

• 04Kingpin

  the central bolt that runs through the baseplate and hanger. Tightening or loosening the kingpin nut changes how freely the hanger pivots.

• 05Bushings

  small urethane rings that sit around the kingpin on each side of the hanger. Harder bushings produce stiffer, more stable trucks; softer bushings allow more lean and turn.

• 06Pivot cup

  a small cup pressed into the baseplate socket. The rounded nose of the hanger seats inside it and allows the hanger to pivot smoothly. A cracked or missing pivot cup causes slop and noise.

Fingerboard truck width is typically stated as the hanger width — the distance across the T-shaped hanger from end to end. Axle width is slightly wider because the axle rod extends past the hanger on each side to accommodate wheels and lock nuts. When a listing or spec sheet says '32mm trucks,' that number almost always refers to hanger width, not axle width. Buyers should verify which measurement is being used if specs are not explicitly labeled.^4, 5, 2

• 01Hanger width: distance across the hanger ends (the stated truck size).
• 02Axle width: total end-to-end length of the axle rod, wider than hanger width.
• 03Documented common hanger widths: approximately 29mm, 32mm, 34mm, and 36mm, as listed by Blackriver and other brands.
• 04The 29mm size is associated with narrower decks. 32mm and 34mm are widely considered standard. 36mm targets extra-wide setups.

Truck width affects how a setup looks, feels, and performs. A truck that is significantly wider than the deck causes the axle ends and wheels to protrude well beyond the deck edges (axle overhang), which changes the feel of grinds and flips. A truck that is significantly narrower than the deck leaves the deck edges hanging over the wheels, which can also affect balance and appearance. Most riders and guides describe a well-matched setup as one where the truck width is equal to or slightly narrower than the deck width, with wheels sitting just inside or flush with the deck edges.^{4, 5, 2, 6}

• 01Axle overhang: when axle ends extend noticeably beyond deck edges, it affects grind balance and the look of the setup.
• 02Wheel clearance: wheels that protrude significantly past the deck can make flip tricks feel different.
• 03Matching convention: a common recommendation is to match truck hanger width to deck width or keep truck width slightly narrower.
• 04Mismatched setups are not broken — some riders intentionally run mixed widths — but sellers should disclose when deck and truck widths do not match.

Several brands publish their truck width options on official product pages. The following notes are drawn from those sources. Buyers should verify current availability directly on brand or retailer pages, as product lines change.^{4, 3, 7, 8, 6}

• 01Blackriver (Germany, est. 1999): official shop lists 29mm, 32mm, 34mm, and 36mm hanger widths. Also offers a Dual Bearing Edition. Spare parts including single hangers, bushings, and pivot cups are sold separately.
• 02Dynamic (Southern California, est. 2016): offers standard and Dual Bearing Edition trucks. Standard Dynamic Trucks are designed for single-bearing wheels; the Dual Bearing Edition has a longer axle for dual-bearing wheels. These two axle types are not interchangeable.
• 03Yellowood (Y-Trucks): X4 model is 32mm; X5 model is 34mm, per retailer product listings.
• 04Teak Tuning (Rochester NY, est. 2014): lists Prodigy Gen2 Pro trucks in 29mm, 32mm, 33mm, 34mm, and 36mm. Frequently appears in complete setups.

Some truck lines and wheel lines are designed for a specific bearing format and are not interchangeable without the correct matching part. This is one of the most common compatibility mistakes buyers make when purchasing trucks and wheels separately.^3, 9, 7

• 01Single-bearing wheels seat one bearing per wheel on the axle end.
• 02Dual-bearing wheels seat two bearings per wheel, requiring a longer axle to accommodate them.
• 03Standard Dynamic Trucks are documented as designed for single-bearing wheels only. Dynamic's Dual Bearing Edition trucks have a longer axle for dual-bearing wheels. The two are not interchangeable.
• 04Blackriver also offers a Dual Bearing Edition with a distinct axle design.
• 05A buyer who purchases single-bearing wheels for dual-bearing trucks (or vice versa) will find the wheels do not seat correctly.

Photo: Dynamic Fingerboards / dynamicfb.com (License pending)Open image lightbox

Bushings are the urethane rings around the kingpin that control how freely the truck turns. Replacing or upgrading bushings is one of the most accessible ways to change how a setup feels without replacing the whole truck. Blackriver's documented bushing lineup illustrates the range well.^{10, 1, 11}

• 01Softer bushings: more lean and turn, preferred by riders who like loose trucks, bowl or transition skating. Blackriver Blue (TKY signature) bushings are documented as their softest option.
• 02Medium bushings: a middle-ground feel. Blackriver Orange bushings are described on the official page as the standard medium-hard option. White medium bushings are documented as an all-rounder that firms up with break-in.
• 03Harder bushings: more stability and resistance to lean. Blackriver Red bushings are documented as the hardest in their lineup.
• 04Bushing hardness preference is personal and also affected by riding style. No single hardness is universally best.
• 05Over-tightening the kingpin nut to compensate for soft bushings can compress and deform bushings. Upgrading bushing hardness is generally preferred over excessive kingpin tightening.
• 06Blackriver identifies replacement-bushing hardness by color and name rather than a published numeric durometer.

Many used truck listings on the secondary market are sparse on specs. There are practical ways to work around this.^2, 3, 4

• 01Measure with calipers: hanger width can be measured across the hanger ends. Buyers can ask sellers to measure and state the result.
• 02Brand and generation clues: a truck listed as 'Blackriver 3.0 29mm' gives brand, generation, and width. Listings missing any of these fields are underspecified.
• 03Photo signals: a top-down photo of the truck next to a ruler gives a rough width estimate. A photo of the axle end can reveal whether it is a standard or dual-bearing axle (longer axle tip for dual-bearing).
• 04Ask directly: requesting width, bearing compatibility, and included hardware is reasonable before purchasing used trucks.
• 05Condition clues: photos of bushings (look for deformation or flattening), pivot cups (look for cracks or missing material), and axles (look for bending or thread damage) reveal how the trucks were used and maintained.

These are documented patterns that cause buyer confusion or post-sale disputes on the secondary market.^2, 4, 3

• 01Mixing hanger width and axle width: a seller measuring axle-to-axle may report a number larger than the standard hanger-width size (e.g., stating '36mm' for a truck that is 34mm hanger width). Always clarify what was measured.
• 02Selling spare parts as full sets: a single hanger or a pair of baseplates without the other components is not a complete truck set. List exactly what is included.
• 03Omitting pivot cups: pivot cups are small and easy to lose. Sellers should confirm pivot cups are present and photograph them.
• 04Not disclosing a dual-bearing axle: a buyer purchasing standard single-bearing wheels will discover the incompatibility only after the fact.
• 05Width mismatch without disclosure: listing a truck and a deck together without noting that the widths differ.
• 06Missing or stripped hardware: stripped kingpin threads, damaged lock nuts, and bent axles significantly reduce usability and should be disclosed.