The Boss

Notable parts

• 4 parts come in a colour no other set has for that mould: Technic Arm 1 x 7 x 3 with Gear Ends (Orange) ×2; Technic Driving Ring Extension, 4 Ridges (Orange) ×2; Technic Gear 24 Tooth [New Style with Single Axle Hole] (Orange); Technic Wheel Holder 7 x 3 (Orange).
• 2 printed parts are only in this set: Technic Block 3 x 5 x 1 2/3 with RoboRider The Boss Print (Dark Gray) ×3; Large Figure Visor / Limb Cover, Armour with The Boss Print (Black).
• 2 parts appear in only a few other sets: Technic Pin Connector Block 7 x 3 (Dark Gray) ×3 — also in 8512 Onyx (all Technic); Wheel 49.6 x 28 VR (36.8 x 26) with Axle Hole (Dark Gray) ×3 — also in 8520 Millennium Slizer (all Technic).
• 8 moulds first came out in 2000, including in this set: Technic Axle and Pin Connector Perpendicular Double ×4; Technic Block 3 x 5 x 1 2/3 with RoboRider The Boss Print ×3; Technic Panel Fairing # 5 Small Short, Large Hole, Side A ×3; Technic Panel Fairing # 6 Small Short, Large Hole, Side B ×3; Technic Pin Connector Block 7 x 3 ×3; and 3 more.
• 4 existing moulds first came out in their colour in 2000, including in this set: Technic Beam 1 x 3 Thin (Dark Gray) ×6; Technic Axle Connector Ridged [with x Hole x Orientation] (Orange) ×3; Wheel 49.6 x 28 VR (36.8 x 26) with Axle Hole (Dark Gray) ×3; Technic Axle and Pin Connector Perpendicular (Dark Gray) ×2.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.